Where did we come from? It is a question that has haunted the entire history of humanity. Thousands of years ago, our ancestors sought to answer the question with myths. Today, we are still struggling with the same question—only today we seek to answer this mystery with science.
Given various observations, it seems plausible that all life arose from a few very simple organisms millions of years ago. Observations of life will raise two important (though almost paradoxical) questions: Why are there so many different kinds of life? And why do there appear to be some over-riding similarities among organisms? The diversity of life is apparent in the vast number of different species of plants and animals that exist on earth. By the mid 20th Century, there was an estimated 1 to 2 million different types of organisms. (12) Now, however, the number is even higher and is expected to continue to climb as more discoveries are made. That there are prevailing similarities among organisms is equally apparent. (13) All organisms use the same biochemical mechanisms to function. For example, all organisms use DNA and many proteins that make up cells and serve as enzymes are the same across species. (12) Also, organisms that are supposed to be closely " related" tend to share certain characteristics. For example, the bones in a whale's front flipper are arranged in much the same way as the bones in human beings' arms and both whales and humans are mammals and therefore more closely related than say humans and squid. (12) Evolution - as defined as - the theory that the various types of animals and plants have their origin in other preexisting types and that the distinguishable diff...
... middle of paper ...
...) The Limits of Darwinism , by David Berlinski
18) The RNA World , by Brig Klyce
19) Viruses: Imported Genetic Software , by Brig Klyce
20) Encyclopedia Britannica Online
21) http://search.eb.com/cgi-bin/dictionary?va=Evolution , Encyclopedia Britannica Online
22) Article from US Environmental Protection Agency; published in May 1998
23) Mutation: Causes and Repair , by McAllister; slide presentation
24) Duke Study Finds New Causes of Mutation , by Marko Djuranovic
Need Writing Help?
Get feedback on grammar, clarity, concision and logic instantly.Check your paper »
- Darwin. Just the mention of his name can peak a person’s interest and result in a controversial and personal opinion of Darwin’s theory concerning evolution. His theories came at a time when a majority of the world felt comforted by the belief that humanity came from a supernatural and faith-required beginning. Evolution has and undoubtedly will continue be a topic of controversy. The reason for that is because religion still has a huge element in the lives of people. Despite the claims of fallacy towards Darwin’s theory of evolution and the unwillingness of acceptance from the public that was exposed to his theories, Darwin nevertheless gave his theory a backbone and came out on top, as eve... [tags: Evolution, Charles Darwin, Human evolution, Human]
1088 words (3.1 pages)
- One inquiry that draws curiosity is the question of how all matter and life came about on Earth in this enormous universe of stars, planets, and space. Many people believe that life is a product of random probability, while many others place their faith in a define creator. This world, Earth, is a minor fraction of an enormous universe that was created by an intelligent being, which designed all matter and living creatures, and is too unpredictable to leave the creation of the universe to the random probability of evolution.... [tags: Christian Theology]
2257 words (6.4 pages)
- Leslie Stevenson and David L. Haberman’s Ten Theories of Human Nature provides an insightful introduction to important philosophical, religious and scientific theories, or ideologies, and their depiction of human nature. The book is meant to provide the reader with a guidance for how we should live, based on ten different theories. The book consisted of ten chapters, each examining a particular theory, presented in a chronological order. Throughout each chapter, historical context was first provided to the reader, followed by a definition of essential terms, a diagnosis of the ways the theory depicts human nature, then a prescription for how one ought to live, and ending with later dev... [tags: Theory, Scientific method, Evolution]
1304 words (3.7 pages)
- The Evolution of Aerospace Technology and Its impact on The World In our world today, there is a wide variety of vehicles and weapons we can use to engage in exploration, as well as warfare in the skies above. We have planes for travel, leisure, and entertainment. We also have many missiles and rocket ships to use in space travel as well as defense and war. These weapons and vehicles are examples of aerospace technology, which is technology that focuses on aviation and space travel. With all of the advances in today’s technology, the aeronautics industry will continue to grow and make an impact the world in many different industries, such as astronautics, aeronautics, as well as aerospace t... [tags: Space exploration, NASA, Ballistic missile]
1015 words (2.9 pages)
- The question of how man evolved has been pondered for some time. Many great philosophers and explorers have made attempts to try to answer this question. Charles Darwin was one of these people. Darwin led a full life of exploration, and during these adventures, he accumulated much information about evolution. He met many explorers that had various ideas of their own about how man evolved. In discussion with these people, he figured out if what they were telling him was fact or fiction.... [tags: Natural Selection, Evolution Essays]
1297 words (3.7 pages)
- For thousands of years, humans have lived together in cities. The concept of urban entities predates recorded history. The role of cities in everyday life has changed throughout human history. This evolution has never appeared more evident than now. With the majority of the world’s population living in cities, they have taken a new prominence in the study of geography. Cities serve as cultural and economic hubs from which new ideas and businesses diffuse. Their control reaches far beyond the immediately surrounding areas.... [tags: City, Urban area, Developed environments]
924 words (2.6 pages)
- The Victorian era was a period of prosperity and knowledge, especially in the social sciences. It was the start of both biological and social scientific exploration in places such as Britain, France, and the United Sates. After the introduction of Darwin’s Theory of Evolution it marked beginning of scientific application in the anthropological study. Due to this increase on popularity, the study of anthropology started to interest the minds of the common man, instead of just missionaries, and to show that, Britain started The Royal Anthropological Institute of Great Britain and Ireland in 1871.... [tags: Anthropology, Race, Racism, Sociology]
1353 words (3.9 pages)
- The Life and Theories of Charles Darwin Charles Robert Darwin was the fifth child of Robert Waring Darwin and Susannah Wedgewood. He was born on February 12, 1809 in Shrewsbury, England where his father practiced medicine. He attended Shrewsbury Grammar School which was a well-kn own secondary school which concentrated on teaching classic languages. Even as a boy Darwin loved science and his enthusiasm for chemical studies earned him the name "Gas" from his friends. The headmaster at Shrewsbury, Dr.... [tags: Biography Biographies Essays]
1141 words (3.3 pages)
- Charles Darwin, an English naturalist and geologist, is best known for his works on the “theory of evolution by natural selection.” He was born on February 12, 1809 in Shrewsbury, England to Robert and Susannah Darwin. Growing up, he was quiet and liked to be alone, often irritated and depressed about everything. Charles Darwin would often go on walks, collecting whatever interested him, one of his favorite hobbies, a useful skill he would later use in his research. As he grew up, he began to find interest in watching birds and hunting.... [tags: Charles Darwin, Natural selection, Evolution]
1582 words (4.5 pages)
- Charles Darwin was a man of science. He had a true passion for all things involving both plants and animals. Darwin made many contributions to the field of science, but his main contribution that he is most well-known for involves his theories of evolution, or more specifically, how species tend to change over long periods of time through a process called natural selection. Natural selection is defined by Darwin as the “preservation of favorable variations and the rejections of injurious variations“ (Jacobus 900).... [tags: natural selection, creationist, theories]
641 words (1.8 pages)