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Introduction about are human activities the cause of global warming and climate change
Human activity that causes global warming
Fossil fuel impacts on the environment
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Earth Faces a Sixth Mass Extinction
Scientists in Great Britain have been studying the distribution of birds, butterflies and plants for the past 40 years and the results from these studies suggest that the Earth is heading towards another mass extinction, and this one may have its roots in human activity.
Within the four billion years that Earth has been around, it has already experienced five mass extinctions. The most recent, and most well known occurred 65 million years ago and caused the extinction of the dinosaurs. While that my have been caused by a meteor colliding with the earth, if scientists are correct, our actions, both past and present, are harming many species of organisms and we may even be causing our own demise.
The ongoing studies in Great Britain covered the biodiversity (that is the amount of species of an organism within a given area) and the amount of land the plants, birds, and butterflies each occupied. It covered 1254 species of plants studied from 1954 to 1960 and again from 1987 to 1999, 201 bird species studied between 1968 and 1971 and again from 1988 to 1989, and 58 butterfly species studied between 1970 and 1982 and again between 1995 and 1999 (Thomas et al. 2004). Before this study there was only speculation into the possible population decline of insects. Since they are so abundant it had been hard to get any grasp on their actual number or the effect humans were having on them (Pennisi 2004).
Over the time they were studied 3.4% of the species of butterflies went extinct compared to only .4% of the plant species. None of the species of birds that were studied went extinct during the time of the research. The extinctions that occurred were evenly spread throughout Great...
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...xtinction just yet, a short period of time from a geological point of view can be hundreds of thousands of years.
References
Ananthaswamy, Anil. “Earth faces sixth mass extinction” NewScientist.com News Service. March 18, 2004 http://www.newscientist.com/news/news.jsp?id=ns99994797
Pennisi, Elizabeth. 2004 “Naturalists' Surveys Show That British Butterflies Are Going, Going ...” Science v. 303, p. 1747
Recer, Paul. “Humans blamed for march toward 6th mass extinction” Star Ledger Online. March 19, 2004 http://www.nj.com/news/ledger/index.ssf?/base/news-14/1079682723291630.xml
Rincon, Paul. “UK wildlife 'heading into crisis'” BBC News Online. March 18, 2004 http://news.bbc.co.uk/2/hi/science/nature/3520372.stm
Thomas, J. A. et al., 2004 “Comparative Losses of British Butterflies, Birds, and Plants and the Global Extinction Crisis” Science v. 303, p. 1879
This brief biography of Lyndon Johnson outlined his life beginning in rural Texas and followed the ups and downs of his political career. It discusses his liberal, "active government" mentality and its implications on both domestic and foreign issues. Johnson was obviously a man who knew how to get things done but his "under the table" methods are brought into question in this book, although, in my opinion, Schulman presents a fairly positive portrayal of LBJ.
Burton, Robert, ed. Nature's Last Strongholds. New York: Oxford UP, 1991. Print.
During the LBJ administration, Johnson was focused on ending the War on Poverty, the centerpiece of his presidency, and bringing justice to his fellow men and women. However, his pressing desire was to give the “Great Society a chance to grow and prosper! Johnson inherited the presidential seat after the death of John F. Kennedy. Immediately, Johnson was concentrated on establishing himself in the office of the Presidency, and to continue the legacy of JFK. Johnson quickly administered a group of domestic programs which he called the “Great Society”. Johnson’s vision for the Great Society drew on both his own primary identification with the New Deal (which he supported heavily) and his commitment to go beyond the achievement of FDR to create an America worthy of leadership in the twenty-first century. For America, this was the perfect time to build a Great Society. LBJ was confident that this was a time to prove that our material progress is only the foundation on which we will build a richer life in mind and spirit. He believed that the Great Society rested on an abu...
On a day to day basis, most people take for granted the lives we get to live, and put too much value on the extra things such as materialistic items. Also, the majority of humans are too invested in their personal lives or with themselves that they do not look at the big picture of how what we are doing now will effect us later. As humans, the routines in our lives can bring us harm, and within time a we may become the sixth extinction. In “The Sixth Extinction” by Elizabeth Kolbert, she gives many examples of animals that are or may become extinct. Along with ways humans contribute to the effort of putting them in danger or having them become extinct. In the end having a summary of how this all comes together and impacts us humans in more
The chapter of life which saw the rise of the dinosaurs is one of the most fascinating periods in our earth’s history. It is often the subject which brings about young children’s first exposure to science. When these children learn about these intriguing prehistoric beasts, one of their primary inquiries concerns the cause of their annihilation. What could have led to the demise of all those creatures, who lived very successfully for millions of years? This question has plagued experts and curious children alike for decades. In the early 1990s, a “smoking gun” was discovered – purported to solve the mystery of how the dinosaurs met their fate. This discovery was the Chicxulub crater in Yucatan, Mexico. The claim was that this 180 kilometer crater was the impact scar left by an asteroid that collided with the earth. The asteroid was so large and landed with such force that it effectively ended the dinosaurs reign over the earth. However, recent evidence and research reported in Proceedings of the National Academy of Sciences suggests that this could not have been the case, because the Chicxulab crater predates the mass extinction by roughly 300,000 years. Rather, the evidence suggests that two or more impacts caused the mass extinction experienced by dinosaurs.
In 1960 on July 13th Johnson was nominated for President of the United States by Sam Rayburn, a Speaker of the House of Representatives. On November 8th Johnson was elected Vice President of the United States and was re-elected to his third term in the United States Senate. On November 22nd, Johnson had become the 36th President of the United States after the assassination of John F. Kennedy in Dallas, Texas. Due to all the aftershock of Kennedy’s death, Johnson was given a climate that gave him the opportunity to finish the unfinished work of Kennedy’s New Frontier. Once Johnson became President a couple of very important pieces of legislation were passed. The first was the Civil Rights Bill that Kennedy had promised to sign. The second was the Economic Opportunity Act of 1964. Johnson also did great things involving the Vietnam war, the Dominican Republic, He passed the Higher Education Act, Johnson also worked on the Elimination of Poverty and Stopping racial injustice. Johnson often was noticed as an ambitious, tireless, and imposing figure. He was ruthlessly effective at getting legislation passed. Johnson usually worked a number of 18 to 20 hour days with no break and usually was always absent of any leisure activities.
To get a feel for how Lyndon Johnson came to achieve greatness, let us look at how his journey began. In 1908, Lyndon was born on a farm near Stonewall, Texas to his loving parents Samuel and Rebekah. His father was a man who had a love for politics and instilled it into his son at an early age. Lyndon would hide “under tables or stand behind doors, straining to hear every word of his father’s evening bull sessions with political friends” (Schulman, 7). His father would also take him on trips with Sam Johnson, a member of the Texas State Legislation. On such trips, he learned his father’s liberalism and also learned a strategy of Sam’s by “getting really close to someone, nose to nose, when he wanted to convince them of something” (7). These tactics and others such as Sam’s honesty in regards to not taking bribes were characteristics which helped mold him.
The life and presidency of Lyndon Baines Johnson could never be summed up in a word, a phrase or a sentence. Even hundreds of pages seem too few to capture the years of Johnson. Both books present Johnson as a political figure as powerful and memorable as Lincoln or FDR, each trying to show a complete picture of this huge man. History books will forever be puzzled by this enigma of a man, just as readers and students are. The biggest struggle is determining how one feels about the actions and effects of Johnson. Many presidents can be seen as almost completely "good" or "bad" depending on one's political ideology and opinions, however, when one looks at Johnson, it is easier, almost inevitable, to find nuances and contradictions which make forming straightforward and binary opinions difficult, if not impossible. Accomplishments are followed by nagging failures and triumphs are shadowed by relentless criticism. These two books (Lyndon Johnson and the American Dream by Doris Kearns Goodwin and A Life: LBJ by Irwin and Debi Unger) try to present a story of a figure that was larger-than-life, yet just a regular man underneath. Both books tell the story, but leave it up to the reader to decide how to feel, to decide if the good outweighs the bad and vice versa. They have to decide what to make of this man who, in his life, ranged from a confident young senator, a triumphant president, a defeated, tired leader, to ultimately just an old man hoping his story will live on.
While divorce gives parents a novel opportunity to begin a new life, it leads to an unfortunate twist in lifestyle for the children. In “What About The Kids? Raising Your Children Before, During, and After Divorce” Judith S. Wallerstein, Ph.D., a psychologist who spent 25 years of her life studying the effects of divorce on children, and Sandra Blakeslee, a scientist writer who has spent nearly all of her profession writing for New York Times, wrote, “Each decision to divorce begins a long journey that holds surprising, unexpected turns.”. Divorce leads to many unforeseen negative consequences for the children involved. Some frequent symptoms such as, anxiety, depression, guilt and grief emerge in the children’s behavior.
Divorce is a very common word in today's society. According to the American Heritage Dictionary, "divorce is the legal dissolution of a marriage or a complete or radical severance of closely connected things"(Pickett, 2000). This dissolution of marriage has increased very rapidly in the past fifty years. In 1950 the ratio of divorce to marriage was one in every four; in 1977 that statistic became one in two. Currently one in every two first marriages results in divorce. In second marriages that figure is considerably higher, with a 67% average (National Vital Statistics Report, 2001). One critical aspect of divorce is often not taken into consideration: How it affects children. Every year 1.1 million children are affected by divorce (Benjamin, 2000). Children from divorce or separation often exhibit behavioral and long-term adjustment problems (Kelly, 2000). Throughout this paper I will discuss divorces effects on children at different age levels, how they react, and what can be done to help them.
Several mass extinctions have occurred during the Earth’s history. The Cretaceous – Tertiary Boundary (K-T) Extinction caused the loss of at least three-quarters of all species known at that time including the dinosaurs. The cause of this mass extinction is a controversial subject among scientists but the fossil evidence of it’s occurrence is abundant.
Earth has gone through five fully major extinctions before. We currently are in the process of Earth’s sixth mass extinction. This mass extinction is closely related in severity to the extinction of the dinosaurs. Earth’s extinctions are broken into three different areas. The first area was the large number of animals caught by hunter-gathers. The discovery of agriculture led to the second area of extinction, wildlife habitats. These wildlife habitats were destroyed due to humans starting to stay in one area.
As stated above, there are a multitude of causes for this “mass extinction”, and most all of them are caused by humans. One such causality is overfishing. Everyone loves to eat fish. However, with overfishing, humans are collecting more fish than we can consume as a population. Overfishing is when people collect more fish from the o...
could go extinct with the way the climate is going (Roach, 2004). When many different kinds
Because the CO2 levels are rising, the ice caps are melting and many more animals can become extinct. When pangea started splitting, there was a lot of volcanic activity, which cause the death of many dinosaurs. A meteor also hit earth and the mass extinction of many land and marine animals happened. There have been five mass extinctions in Earth’s history. The worst one wiped out ninety-six percent of marine life and seventy percent of land organisms. This took millions of years to recover.