Sunday, January 19, 2020
Biology Essay -- essays research papers
Lab Report 1                              Principles of Biology 1(BIOL 100) Fall 2001                              Gerard Chretien                         Living cells perform a multitude of chemical reactions very rapidly because of the participation of enzymes. Enzymes are biological catalysts, compounds that speed up a chemical reaction without being used up or altered in the reaction. The material with which the catalysts reacts, called the substrate, is modified during the reaction to form a new product. But because the enzyme itself emerges from the reaction unchanged and ready to bind with another substrate molecule, a small amount of enzyme can alter a relatively enormous amount of substrate. This report will illustrate the enzymatic action of the enzyme catecholase, which is common in plants. To study this particular enzyme in a laboratory, the natural substrate catechol is oxidized by the removal of two hydrogen atoms. The substrates of the enzyme are catechol and oxygen. These substates react with one another within the active site of the enzyme. The products formed by this reaction are benzoquinone has a brown color, you can see that the reaction has taken place. This is called the fruit browning reaction. Benzoquinone inhibits the growth of microorganisms and prevents damaged fruit from rotting. In undamaged cells catecholase is stored in vesicles and does not interact with catechol.     In the presence of the enzyme catecholase:     Catechol+1/2O2 benzoquinone+H2O The structure of the enzyme is mainly dependent on the active site and variable groups. Extreme temperatures or extreme pHs can alter the structure of an enzyme. Enzymes function to lower the activation energy to break the bonds. They achieve this by putting stress and pressure on the bonds or creating a microenvironment for the substrate. A change in the temperature or a fluctuation in pH can alter... ... questions and test answers. The method has five stages: 1. Making observation. 2. Asking questions. 3. Forming hypotheses, or tentative answers to the questions. 4. Making predictions based on the hypotheses. 5. Testing the predictions by making additional observations or conducting experiments. The information gained may support or yield opposite results based on predictions being tested. My independent variable would be time and the dependent one would be the enzyme pectinase. I believe the key feature of my experimentation is the control of most factors so that the influence of a single factor can be seen clearly. The setting would take place within a laboratory, equipped with various components such as tubes, microscope and other related equipment. I would try to investigate the physical properties of pectin such as molecular weight, molecular conformation and aggregation of pectin molecules in the solution. In regards to the pulpiness of the applesauce, I would use the pectin as a emulsifier and stabilizer. This procedure would reduce the pulp of the applesauce considerably without making the solution too watery.          Â
Saturday, January 11, 2020
Neoliberalism
Unilateralism can be described as a new economic direction enforced by US and British leaders after WI. It was touted as the best means to livelihood through freedom of the private sector based on four main pillars; vaporization of utilities, financial deregulation, management and manipulation crisis and state redistribution where wealth was supposedly to trickle down' to the poor. Harvey assesses how a seemingly utopian idea was actually a way for US global domination and a means to store upper class wealth.This destructive Capitalist entitlement Is so Ingrained that we are unaware of what an Influential role It plays Into our existence and our seemingly need for new commodities. Who benefits from ‘Individual freedom' and what role does It play In national education, media, and finances and Internationally through the WTFO and MIFF. Quest for self-liberty through societal movement Is traced back to Incidents in the soviet union, Pans, china and Mexico, to name a few.In 1970 he first trial of liberalizing was carried out in Chile with a CIA backed coup and further US control, designed by The Chicago Boys', through vaporization and foreign investment: which is now used as a model for action. After 911 the US embarked on its ‘obligation to spread freedom' as Pres. Bush put it. The Iraq war and outcome is a modern display of US control through declaration of Unilateralism and its freedom. Continuation of time now allows awareness of materialism, class struggle, indigenous fairness and the global society.
Friday, January 3, 2020
Age-Related Changes that Occur in the Cardiovascular...
Case Study 1 Unit 2: Age-Related Changes that Occur in the Cardiovascular System Slide 1 The title page introducing what subject I am planning on presenting to the residents of the independent living facility. It tells them who I am and what subject is being presented. The residents that I am going to be addressing are healthy, active and mentally alert senior who want to learn more about health conditions that are affecting their age group in general and are of major concern. Slide 2 Homeostasis is the equilibrium of the body. Homeostasis is maintained by the balance of our vital signs to keep us on an even keel. The definition of Homeostasis is, â€Å"Homeostasis is the compensation of the vital signs†¦show more content†¦Diet and exercise can be the most drastic changes, and the hardest to comply with. If an individual has never exercised much and has lived on fast food, eating healthy and increasing activity besides sitting in front of the television can be the most challenging. Slide 5 A hypertensive heart has thickened ventricular walls which make the heart work harder to pump the blood throughout the body. When the walls thicken, the elasticity is decreases and the heart and other systems need to work harder to pump oxygenated blood throughout the body. Any condition that affects the oxygenated blood from flowing through the heart can cause the ventricular walls to thicken. As we age our blood pressure increases, age, ethninticity, weight, and genetics can play a role in a hypertensive heart condition. Slide 6 Hypertension is sometimes call, â€Å"The Silent Killer†(www.medicinenet.com 2013). Hypertension usually does not have any symptoms and puts a lot of stress on other major organs which over time will start to deteriorate. Some side- affects that can impact quality of life are sexual dysfunction, stroke, heart disease, kidney disease, and neurological problems. Sexual dysfunction is usually more noticeable and bothersome to men. Heart disease can lead to other heart related problems, like heart attack (MCI), strokeShow MoreRelatedAge Related Changes That Occur in the Cardiovascular System950 Words  | 4 PagesAge Related Changes that Occur in the Cardiovascular System Age Related Changes that Occur in the Cardiovascular System In the normal conduction of the heart the electrical impulse starts in the SA node, also called the pacemaker of the heart. The electrical impulse travels through the right atrium and through the Bachmann’s bundle into the left atrium. This stimulates the atria to contract. Next the signal travel to the AV node. The AV node slightly delays the signal. This delay is neededRead MoreCauses And Differences Between Men And Women The Aging Process1399 Words  | 6 PagesIs there a gender difference in chronic illness such as cardiovascular disease, chronic kidney disease, hypertension and parkinson’s disease, for older adults in North America? Aging is inevitable, it is part of nature and as an individual ages, they become more at risk for developing a chronic illness such as cardiovascular disease, chronic kidney disease, hypertension and parkinson’s disease. A chronic illness is classified as a disease that lasts for at least 3 months and is progressive whichRead MoreCardiovascular Disease And The Heart Disease Essay1727 Words  | 7 PagesCardiovascular diseases are diseases which involve the heart or blood vessels, they are in fact the leading causes of death and disability in the world. Cardiovascular diseases include coronary artery disease, or ischaemic heart disease (heart attack), cerebrovascular disease (stroke) and diseases of the aorta and arteries including hypertension and peripheral vascular disease (Mendis, Puska, Norrving, 2011). They are all due to a disease known as atherosclerosis which affects arteries (GeorgeRead MoreThe Human Body, A Biological Organization Of Physiological Cascades1323 W ords  | 6 Pagesorgan systems can dramatically influence the potential outcomes of a patient. It is multiple deployments of singular compensatory mechanisms in response to abnormal changes that provides this infinite flexibility. While this continuous flexibility is illustrated in lifestyle diseases such as hypertension and diabetes, its role in acute attention-demanding events are remarkable. An example of such an attention-demanding occurrence is the presence of tension hemothorax. Affecting two organ systems, respiratoryRead MoreThe Aging Process Essays1234 Words  | 5 Pagesin to adulthood, many things start to change in our life. Aging is an unavoidable process, beginning at conception and ending with death. The process does not proceed at a uniform rate all over the body. As we age, the organ systems of individuals age at different rates. Our body gradually slows down in early adult life. These changes are not apparent until perhaps 50 years of age as they are no t perceptible. The skeletal system gradually changes over the years until it is porous andRead MoreDiabetes : The Common Chronic Disorders1737 Words  | 7 Pagesdiabetes [2]. It is estimated that more than 5% men and more than 4% women in England are found to have diagnosed diabetes. While, 3% men and 1.5% women over 35 years old are having undiagnosed diabetes [3]. In England, more than 20,000 people under the age of 17 have diabetes. About 97 percent are found to have Type 1 diabetes; 1.5 percent has Type 2, and 1.5 per cent has another type of diabetes [4]. The total prevalence of diabetes mellitus in 2001 in England to support delivery of health-care servicesRead MoreHow I Changed Little by Little to a More Healthy Existence871 Words  | 3 Pages I began looking at small changes that I could make easily. Changes that came easily to me were incorporating more protein into my diet and cutting back on the carbohydrates by eating protein bars, tuna, eggs, or yogurt for breakfast inst ead of a bagel or muffin. I keep raw, unsalted almonds in my drawer at work to snack on, and have replaced my afternoon Pepsi with water. These changes were small and didnt require a full scale re-do on my diet. The other change I decided to make was to incorporateRead MoreSudden Cardiac Death Information Literature1471 Words  | 6 Pagesand with the vast majority occurring in the setting of coronary disease and other cardiac events. I performed the systematic review of journal article ranging from 2006 to 2016 with appropriate information related to sudden cardiac death and related consequences, the context of problem and related solution. SCD is so immediate that detailed study should be performed to understand and to review in better depth with screening evaluation and permanent treatment. Objective is to summarize published suddenRead MoreAge Related Changes in the Cardiovascular System843 Words  | 4 PagesCase Study # 2: Age-Related Changes that Occur in the Cardiovascular System Sarah Miller ITT Technical Institute As the heart ages it goes through changes such as thickening of the walls, slowing heart rate, decrease in maximum heart rate, loss of efficiency in pumping. The layers of the heart include the pericardium, epicardium, myocardium, and endocardium. The pericardium is the membrane that protects; it is a sac that the heart sits in and has a layer of fluid between for shock and absorptionRead MoreAir Pollution Essay1335 Words  | 6 Pagescases leads to death. Air pollution affects our health in multiple ways; as it varies from minimal to serious problems. The air pollutants have negative effects on our cardiovascular system, causing many fatalities as well as diseases to those specifically in China. People can protect themselves from the suffrage of cardiovascular diseases by being cautious with what they are surrounded by. With the rapid industrialization and urbanization in China, air pollution has become a major issue. China
Thursday, December 26, 2019
Important Lines of Latitude and Longitude
Four of the most significant imaginary lines running across the surface of Earth are the equator, the Tropic of Cancer, the Tropic of Capricorn, and the prime meridian. While the equator is the longest line of latitude on Earth (the line where Earth is widest in an east-west direction), the tropics are based on the suns position in relation to Earth at two points of the year. All three lines of latitude are significant in their relationship between Earth and the sun. Running in the opposite direction, north-south, the prime meridian is one of the most important lines of longitude on Earth. Equator The equator is located at zero degrees latitude. The equator runs through Indonesia, Ecuador, northern Brazil, the Democratic Republic of the Congo, and Kenya, among other countries. It is 24,901.55 miles (40,075.16 km) long. On the equator, the sun is directly overhead at noon on the spring and fall equinoxesâ€â€around March 21 and September 21 each year. The equator divides the planet into the Northern and Southern Hemispheres. On the equator, the length of day and night are equal every day of the year: day is always 12 hours long, and night is always 12 hours long. Tropic of Cancer and Tropic of Capricorn The Tropic of Cancer and the Tropic of Capricorn each lie at 23.5 degrees latitude. The Tropic of Cancer is located at 23.5 degrees north of the equator and runs through Mexico, the Bahamas, Egypt, Saudi Arabia, India, and southern China. The Tropic of Capricorn lies at 23.5 degrees south of the equator and runs through Australia, Chile, southern Brazil (Brazil is the only country that passes through both the equator and a tropic), and northern South Africa. The tropics are the two lines where the sun is directly overhead at noon on the two solsticesâ€â€about June 21 and December 21. The sun is directly overhead at noon on the Tropic of Cancer on June 21 (the beginning of summer in the Northern Hemisphere and the beginning of winter in the Southern Hemisphere), and the sun is directly overhead at noon on the Tropic of Capricorn on December 21 (the beginning of winter in the Northern Hemisphere and the beginning of summer in the Southern Hemisphere). The reason for the location of the Tropic of Cancer and the Tropic of Capricorn at 23.5 degrees north and south, respectively, is due to the axial tilt of the Earth. The Earth is tilted 23.5 degrees from the plane of the Earths revolution around the sun each year. The area bounded by the Tropic of Cancer on the north and Tropic of Capricorn on the south is known as the tropics. This area does not experience seasons, because the sun is always high in the sky. Only higher latitudes, north of the Tropic of Cancer and south of the Tropic of Capricorn, experience significant seasonal variation in climate. Areas in the tropics can be cold, however. The peak of Mauna Kea on the Big Island of Hawaii stands nearly 14,000 feet above sea level, and snow is not unusual. If you live north of the Tropic of Cancer or south of the Tropic of Capricorn, the sun will never be directly overhead. In the United States, for example, Hawaii is the only location in the country that is south of the Tropic of Cancer, and it is thus the only location in the United States where the sun will be directly overhead in the summer. Prime Meridian While the equator divides Earth into Northern and Southern Hemispheres, it is the prime meridian at zero degrees longitude and the line of longitude opposite the prime meridian (near the International Date Line) at 180 degrees longitude that divides Earth into the Eastern and Western hemispheres. The Eastern Hemisphere consists of Europe, Africa, Asia, and Australia, while the Western Hemisphere includes North and South America. Some geographers place the boundaries between the hemispheres at 20 degrees west and 160 degrees east to avoid running through Europe and Africa. Unlike the equator, the Tropic of Cancer, and the Tropic of Capricorn, the prime meridian and all lines of longitude are completely imaginary lines and have no significance to Earth or its relationship with the sun.
Wednesday, December 18, 2019
Why Adolescents Commit Suicide - 599 Words
Adolescents are an important group for every society and country. Each year unfortunately, thousands of adolescents are dying, not from cancer or car accidents, but by their own hands. They make the choice to take their lives. There are many laws and regulations promoting healthy lifestyles for adolescents within the United States. Adolescence is a period of physical and psychological change for teenagers. The central theme of the adolescent individual focuses on identity development, creating one’s value system, and accomplishing life goals. Adolescents have many psychological and social problems. Psychological problems consist of depression, stress, and anxiety. Social problems include social networks such as family, friends, and the academic setting. This period includes notable negative behaviors such as suicide attempts and alcohol and drug use. The number of teenagers who take their lives is rapidly increasing each year. According to the Centers for Disease Co ntrol (CDS), suicide is the third-leading cause of death among U.S. adolescents. Overall, suicide ranks as the 11th leading cause of death among the American population (Centers for Disease Control and Prevention, 2006). Suicide attempts occur in different age groups; however, suicide attempts are more common among adolescents than other age periods. The number of youths, ranging from ages ten to 14 committing suicide has been of particular concern, with suicide rates increasing 51% between 1981 andShow MoreRelatedTeen Suicide: A Growing Problem Essay1541 Words  | 7 PagesSuicide is a permanent solution to a temporary problem.; Teen suicide as an extremely complex tragedy, that unfortunately happens all the time throughout the United States. There are friends, parents, and peers that are facing the misfortune of losing a young, close, loved one to suicide. Most people dont realize that adolescent suicide is common. They dont want to believe how often this occurs in the secure environment found in the small towns of America, as well as in its largest cities.Read MoreEssay about Virgin Suicides1044 Words  | 5 PagesEach year suicide is becoming more common in the United States among adolescents, according to the Suicide and Mental Health Association International. The main reason why adolescents commit suicide is because they are depressed. In the article Nightmare in the Mirror by Scott Long, he explains that adolescence has changed throughout the years. An assertion he makes is that teens have Angst and bouts of suicidal despair distinguish this gloomy figureÂ… (Long 156). Long explains that throug houtRead MoreWe Must Commit Suicide And Practice Self Harm1498 Words  | 6 PagesAdolescents are more likely than any other age group to commit suicide or engage in self-harm. Why is that? Being an adolescent is a tough time in one’s life. They begin experiencing puberty, experimenting in relationships, hanging out with friends more but also having problems at home and self-esteem issues. We will discuss exactly why adolescents feel the need to commit suicide and practice self-harm. As well as the different forms of self-harm, clues on determining if the adolescent is suicidalRead MoreSocial Issues in Hong Kong Teen Suicide1265 Words  | 6 Pagessocially and academically. A number of factors influence how adolescents navigate this period of change. Positive outcomes are more likely if adolescents engage in healthy activities, have adequate social support, and are connected with their families. However, the negotiation of developmental tasks in adolescents may also be quite challenging and difficult, leading to the onset of adolescent depression, substance use, and ultimately suicide The number of teenagers taking their own lives is increasingRead MoreChild, Adolescent And Suicide867 Words  | 4 Pages Child Adolescent and suicide Suicides attempt is a potentially self-injurious behavior with a non-fatal outcome, for which there is an evidence that the person intended at some level to kill himself/ herself (Kola 1). In simple words a person tries to kill himself/herself by poison, injury and many other ways. Then intent to commit suicide is called suicidal ideation. Now a days, many people committing suicide in which most of them is the youth generation. Why it happens?. When a personRead MoreReasons for Adolescent Suicide Attempts1173 Words  | 5 Pagestext reports situations when an adolescent is at risk of suicide. Some of these situations are parts of depression, social pressure, drug abuse, and family difficulties. All of these factors make an adolescent feel overwhelmed and confused. There are many events that an adolescent goes through before taking their lives. Finding rates of suicide vary in males and females because the males use more fatal methods than females. What are the feelings that mak e adolescents take their own life? All the informationRead MoreEssay Teenage Suicide1191 Words  | 5 Pages Teenage suicide has become a critical, national problem the extent of which is mind boggling. From 1980 to 1992 the rate of suicides involving persons from the ages of 10-14 years old has increased by 120 percent, and has increased 28.3 percent when involving persons from the ages of 15-19 years old (Suicide 451). More recently in a poll of 3,210 high-school honor students, a stunning one-quarter have seriously considered suicide (Eaton 15). Suicides have been proven to be one of the leading causesRead MoreKelly Yao. British Literature. Mr. Carlucci. May 15, 2017.1377 Words  | 6 PagesMay 15, 2017 Causes of Teenager Suicide Recently, Netflix’s 13 Reasons Why has drawn people’s attention. The drama series illustrates 13 reasons of the teenage girl’s suicide. As we have entered a brand new century, climbing suicide rate has become one of the most serious public health and mental issue in the society. In daily life, there are even more reports of teenage suicide by media. People may wonder about the actual reasons why teenager decide to commit suicide to end their lives. There areRead MoreSuicide Is The Third Leading Cause Of Death1191 Words  | 5 Pages Suicide is the Third Leading Cause of Death in Adolescence Connie Yonn West Coast University Suicide behavior arise in adolescence, a period when significant mood and disturb behavior preoccupied with death (Stoep, 2009). Teen suicide rates are disturbing and have been increasing in the current years base on statistic (Croft, 2016). The increasing number of teen suicide have cause awareness and brought attention to observance in teen suicide (Croft, 2016). It is said to be the third leading causeRead Moreâ€Å"Dying Before Their Time: The Startling Trends in Adolescent Suicide†1217 Words  | 5 PagesAccording to the American Academy of Child and Adolescent Psychiatry (AACAP), suicide is the third leading cause of death for adolescents aged 15-24 years old. This calculates to 33,000 adolescents killing themselves each year (CDC, 2010). The National Conference of State Legislatures (NCSL), reported that suicide amongst all individuals nation wide has declined over all, but despite the decline, adolescents between the ages of 15 and 19 have shown suicide rates th at has increased by 6 percent (NCSL
Monday, December 9, 2019
“The Code of the Street†by Elijah Anderson Sample Essay Example For Students
â€Å"The Code of the Street†by Elijah Anderson Sample Essay The statement Elijah Anderson is seeking to do is that the behaviour of the kids today is greatly influenced by the street civilization. In this street civilization. he describes it as being violent when they’re faced with impersonal onslaughts and any type of disrespect shown. 4. I think this class reading tantrums with two class constructs from the talks in category and the text edition. The first construct would be ethnography. The writer had reached a personal degree with the deprived African American communities of Philadelphia. He was able to separate the difference between â€Å"street†households and â€Å"decent†households. In the nice households. they teach their kids how to be polite to others. how to last their societal environment and etc. ; while the street households have no concern for one another and normally lead to drug usage. alcohol addiction. spouse maltreatment or some other signifier of self-destructiveness. The 2nd construct would be soc ietal construction ( more towards achieved position ) . The difference between interior city/lower category households and upper category households in society is apparent. The households that live off of â€Å"street†codifications have a harder clip get bying with the manus they’re dealt with than a individual who comes from a stable household background. 5. I believe the most of import transition in this article would be. â€Å"The codification revolves around the presentation of ego. †I believe this is of import because the street codification is merely something that is influenced to a great extent by the continuance of a rundown society. Equally long as the codification is around to devour the kids into force. hatred. and discourtesy. it will go on to raise more coevalss into â€Å"street†households. The codification is what one makes of it. if the grownups would affect themselves more and go â€Å"daddies†in the inner-city communities. these street codifications could discontinue to be. 6. The reading reminds me of the Television show. â€Å"The Boondocks. †In this one episode. it’s about a imm ature male child who is seeking to raise money for a fundraiser. However as he raises more money. he becomes entangled in the â€Å"fundraising game†and starts a crooked concern. This relates back to the class constructs by demoing that kids are influenced by the society around them. The nexus to the picture is every bit follows: hypertext transfer protocol: //www. youtube. com/watch? v=29YO4FkA6BM.
Monday, December 2, 2019
The Anti War Movement Of The Vietnam War Essays -
The Anti War Movement Of The Vietnam War The Anti-War Movement J,J,J,J, United States participation in the Vietnam War was a subject of much debate among the American public. While many Americans supported the United States involvement in the War, in agreement with the Government that American assistance was needed in order to stop the spread of Communism, other people felt that it was immoral for the United States to involve itself in another country's internal matters. The antiwar movement against Vietnam in the US from 1965-1971 was the most significant movement of its kind in the nation's history. Anti-war protesters ?were not confined to the young, radicals, intellectuals, and the disaffected?. By 1968, [they] included many powerful individuals within the business and financial communities, the media, and the government itself? ( McMahon 466). Also by '68, protesters numbered almost seven million, with more than half being white youths in the college. Students for a Democratic Society, (SDS), announced its opposition of the Vietnam War publicly in 1965. In a public announcement, they state their reasons for disagreement. ?We feel that the war is immoral at its root, that it is fought alongside a regime with no claim to represent its people, and that it is foreclosing the hope of making America a decent and truly democratic society?.We are anxious to help and to change our country; we refuse to destroy someone else's country (McMahon 467).? The SDS was not alone in their opposition. Civil-Rights leader, Martin Luther King, Jr., declared his opposition in 1967. He stated many reasons. it became clear to me that the war was doing far more than devastating the hopes of the poor at home. It was sending their sons and brothers and their husbands to fight and die?As I walked among the desperate, rejected and angry young men, I have told them that Molotov cocktails and rifles would not solve their problems?But, they asked, what about Vietnam?Their questions hit home, and I knew that I could never again raise my voice against the violence of the oppressed in the ghettos without having first spoken clearly to the greatest purveyor of violence in the world today-- my own government? (McMahon 471). One aspect of the anti-war movement were teach-ins. Teach-ins were mass public demonstrations, usually held in the spring and fall seasons. These well-publicized rallies made the antiwar effort more respectable. The White House was plagued by two wars: the war in Vietnam and the war at home?. In October 1967, protesters marched on the Pentagon. This was one of the most significant events of the antiwar movement. Although the marchers were unable to get into the Pentagon, this demonstration had a direct influence on the redirection of American policy in Vietnam. The antiwar effort crippled Johnson's presidency. In 1968 he announced that he would not be running for re-election. The antiwar movement inadvertently helped Richard Nixon win the election. Once elected, Nixon was bothered with the antiwar movement. He was convinced that it prolonged the war. He could not understand how the current generation of young people could include brave young marines, hippies and draft-card burners. In May 1970, Nixon ordered an attack on Cambodian sanctuaries to destroy communist command-and-supply buildings. He also tried to contain the protest that he knew his action would provoke. His hopes of controlling the rally failed when poorly trained National Guardsmen killed four students at Kent State University, on May 4. This made the expected protests much worse than anyone in Washington could have foreseen. The wave of demonstrations on hundreds of college campuses paralyzed America's higher-education system. The Kent State tragedy ignited a nationwide campus disaster. ?Between May 4 and May 8, campuses experienced an average of 100 demonstrations a day, 350 campus strikes, 536 colleges shut down, and 73 colleges reported significant violence i n their protests. On that weekend, 100,000 people gathered to protest in Washington. By May 12, over 150 colleges were on strike? (Internet source). The overwhelming response to the invasion of Cambodia and the Kent State crisis soon became too much for President Nixon. On December 15, Nixon announced his intention to withdraw fifty thousand troops from Vietnam in 1970 Among the most convincing theories of the movement were that it
Subscribe to:
Posts (Atom)