Preview

Darwin

Satisfactory Essays
Open Document
Open Document
311 Words
Grammar
Grammar
Plagiarism
Plagiarism
Writing
Writing
Score
Score
Darwin
Darwin's theory of evolution explains how life on Earth has changed over geological time. Scientists believe this is the reason why all living things on Earth exist today. The theory is supported by evidence from fossils, and by the rapid changes that can be seen to occur in microorganisms such as antibiotic-resistant bacteria. Many species have become extinct in the past and the extinction of species continues to happen.
The basic idea behind the theory of evolution is that different species have developed over time from simple life forms. These simple life forms first developed more than three billion years ago (as the Earth is believed to be about 4.5 billion years old).It explains how species are formed.

3,500,000,000 years ago-First bacteria (prokaryotes)
2,000,000,000 years ago-First cells with organelles (eukaryotes)
1,000,000,000 years ago-First multicellular organisms: algae, seaweeds, sponges, jellyfish worms
500,000,000 years ago-First fish
450,000,000 years ago-First land plants and fungi
390,000,000 years ago-First amphibians, insects and reptiles. Much of the land surface covered in fern forests which will eventually become coal
250,000,000 years ago-First mass extinction of life forms (the Permian-Triassic extinction)
220,000,000 years ago-Dinosaurs evolve
200,000,000 years ago-First mammals and birds
130,000,000-First flowering plants
65,000,000-Second mass extinction (cretaceous-Tertiary Extinction.) Dinosaurs die out.
45,000,000 years ago-First modern mammals
35,000,000 years ago-First grasses
3,000,000 years ago-First hominids (Australopithecus)
200,000 years ago-First Homo sapiens evolve. First Neanderthals evolve
100,000 years ago-Humans colonise all habitable land masses
20,000 years ago-Neanderthals die out, leaving Homo sapiens as the only species of human.
15,000 years ago-Agriculture
Continue Reading
View Writing Issues

You May Also Find These Documents Helpful

  • Satisfactory Essays

    Sci 230 Week 1
    • 426 Words
    • 2 Pages

    Sci 230 Week 1

    Evolution by natural selection: This theory came about as a result of Charles Darwin trying to find an explanation for “why there are so many different living beings on earth?” (Pruitt, N. L., & Underwood, L. S. (2006). His theory contains two parts, the first part states that species change over generations. The second part states that what causes this change is natural selection.…

    • 426 Words
    • 2 Pages
    Satisfactory Essays
    Read More
  • Best Essays

    Sea Angels Research Paper
    • 1627 Words
    • 7 Pages

    Sea Angels Research Paper

    ! ! ! ! !…

    • 1627 Words
    • 7 Pages
    Best Essays
    Read More
  • Better Essays

    An Analytical Monograph on Intelligent vs. Evolutionary Design: Filling the Gaps
    • 2649 Words
    • 11 Pages

    An Analytical Monograph on Intelligent vs. Evolutionary Design: Filling the Gaps

    Evolutionary Theory, is defined by the Merriam Webster dictionary as a process of continuous gradual change from a lower, simpler, or worse to a higher, more complex or better state. The theory of evolution, formalized by Charles Darwin, is as much a scientific theory as the theory of gravity, or relativity. Evolution is the binding force of all biological study and has been…

    • 2649 Words
    • 11 Pages
    Better Essays
    Read More
  • Powerful Essays

    Synthetic Biology vs. Natural Selection
    • 1572 Words
    • 7 Pages

    Synthetic Biology vs. Natural Selection

    Darwin first introduced the idea of evolution in his publication of The Origin of Species, on November 24th, 1859 (Campbell, 2005, p. 438). This opposed many traditional views as it was generally accepted that the beginning inhabitants of the world had no mutations in their genetic composition. His publication had two major points. The first being the modern organisms presently inhibiting the earth, differ from their ancestral species by a process called evolution. The other point he made was that of natural selection, as it is the mechanism for evolution. The organisms inherit traits from ancestors who were able to survive specific environmental conditions, passing these traits on to their offspring.…

    • 1572 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Good Essays

    Comparison Of Origin Myths And The Evolution Of Mythology
    • 519 Words
    • 3 Pages

    Comparison Of Origin Myths And The Evolution Of Mythology

    First off, the theory of evolution changes by natural selection as discussed by Darwin in "On the Origin of Species". The theory of evolution in relation to Darwin's idea states that organisms tend to adapt to its environment in order to survive and live on. There are two main points to the…

    • 519 Words
    • 3 Pages
    Good Essays
    Read More
  • Powerful Essays

    Imperialism in Western Civilization
    • 1558 Words
    • 7 Pages

    Imperialism in Western Civilization

    In 1859, Charles Darwin, a scientist from England, formulated the theory of evolution. His theory was composed of two ideas: variation and natural selection. Variation was explained to be certain biological characteristics that a creature possessed in order to survive. Certain creatures who had the positive, favorable traits equipped them better for survival as opposed to the individuals lacking them. Natural selection was the process in which a species that adapted better to the environment because of preferable physical or mental characteristics continued to evolve and what caused the weakest of the species who were lacking in these to perish.…

    • 1558 Words
    • 7 Pages
    Powerful Essays
    Read More
  • Good Essays

    Darwin Natural Selection Analysis
    • 713 Words
    • 3 Pages

    Darwin Natural Selection Analysis

    Darwin’s theory of natural selection is not supported by the geological or fossil record, since there have been little to no remains of intermediate species found in fossils. Darwin explains this by using the imperfection of the geological record, as changes in land over time means that species will often not be preserved in a way that can be studied by scientists. He also references Charles Lyell’s Principles of Geology, which states that the earth’s surface is constantly changing, as evidenced by the degradation and deposition of landmasses. These changes happen slowly, over hundreds of millions of years, implying that life has been present of a long time, and the number of fossils found is a miniscule amount compared to all the living things…

    • 713 Words
    • 3 Pages
    Good Essays
    Read More
  • Better Essays

    What Did Darwin's Natural Selection Provide?
    • 1282 Words
    • 6 Pages

    What Did Darwin's Natural Selection Provide?

    Today, as modern science advances daily, more and more information and theories are contributing to the pro’s of evolution and the con’s. Charles Darwin will forever be remembered as a scientific pioneer who initiated and implemented one of the most well known theories in science today. His work continues to inspire scientists of past and present, and his work has laid the foundation for many theoretical works in the science field…

    • 1282 Words
    • 6 Pages
    Better Essays
    Read More
  • Good Essays

    Charles Darwin's Theory Of Evolution By Natural Selection
    • 652 Words
    • 3 Pages

    Charles Darwin's Theory Of Evolution By Natural Selection

    There have been many theories that explain how evolution occurred. Charles Darwin, on the book Origin of Species, spoke about how traits are passed on from generations to generations by natural selection. In addition, he stated how there are four objections to the theory of natural selection, how species can win the struggle for existence through natural selection, and how the origin of species challenges religion.…

    • 652 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Charles Darwin's Scientific Theory Of Natural Selection
    • 630 Words
    • 3 Pages

    Charles Darwin's Scientific Theory Of Natural Selection

    Evolution is basically the change in the heritable characteristic or traits in living organisms which are passed from one generation to another and gives rise to diversity at every stage of the organism’s biological organisation. The process of evolution was not well understood until 19th century when Charles Darwin proposed the scientific theory of natural selection as a driving tool in evolution. The process involved both the macroevolution in which organisms went through major evolutionary changes over a long period of time and acquired different traits from different parents or ancestries and the microevolution in which a group of organisms went through minimal changes with time but the traits they acquired were typically from the same ancestor.…

    • 630 Words
    • 3 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    Charles Darwin's Theory Of Evolution
    • 235 Words
    • 1 Page

    Charles Darwin's Theory Of Evolution

    Darwin’s theory of evolution is based on the theory of natural selection. Natural selection is the the process whereby organisms better adapted to their environment tend to survive and produce more offspring. This theory is now widely believed by many people throughout the world. Charles Darwin’s theory includes the idea that fossils of extinct animals turn up where similar animals live today. Darwin came up with this theory when he discovered fossils of animals that were very similar to the animals that were living today. Darwin also observed that the Galapagos tortoise’s had different shapes of their shells depending on which island they came from. Darwin believed that these tortoises were adapting to their environment by changing their shell…

    • 235 Words
    • 1 Page
    Satisfactory Essays
    Read More
  • Good Essays

    Darwin's Living Legacy
    • 684 Words
    • 3 Pages

    Darwin's Living Legacy

    Darwin was not the first to suggest that life has evolved over time. In fact, there has been other researchers suggesting there theory. For instance, during 610-546 B.C. a Greek philosopher named Anaximander was one of the first to suggest that life-forms evolved from fish in the seas for this he went through a process of modification once established on land. Also, in the year 1735 Carl Linnaeus published his book, Systema Naturae in which he outlined a method for classifying all organisms. Darwin’s contribution was later acknowledged. Darwin’s most famous theory is called natural selection—stating evolutionary change derives through production of variation within generation and different survival of individuals with different [variation]…

    • 684 Words
    • 3 Pages
    Good Essays
    Read More
  • Good Essays

    Doubting Darwin
    • 1746 Words
    • 5 Pages

    Doubting Darwin

    Evolution is split into to two central concepts. The first is universal common descent, it is the idea that every living creature can be traced back to an unbroken lineage to the same life forms that back then were primitive. The second is natural selection which that the entire complexity and intelligence of life has evolved by many small random mutations. These mutations help organisms survive in many different environments.…

    • 1746 Words
    • 5 Pages
    Good Essays
    Read More
  • Good Essays

    Eugenics Vs Darwinism
    • 492 Words
    • 2 Pages

    Eugenics Vs Darwinism

    Several hypotheses have been put forward to explain the existence and development of species. One of the most common explanation is based on the Darwin theory. It is believed to give the history of existence and development of species. Darwin theory which was also commonly referred to as Darwinism, was a biological evolution based on the idea of species and organisms developed from natural selection of variations of characteristics that help species survive and compete with other species. During the late nineteenth century, however, Darwin’s particular theory of evolution by natural selection, which was also commonly referred to as Darwinism, gradually, lost ground to other scientific explanations for organic revolution (Larson, 2009).…

    • 492 Words
    • 2 Pages
    Good Essays
    Read More
  • Satisfactory Essays

    The Cretaceous-Tertiary Extinction
    • 236 Words
    • 1 Page

    The Cretaceous-Tertiary Extinction

    The Cretaceous-Tertiary extinction occurred about 66 million years ago. During this extinction, pterosaurs, ammonites, marine species, and rudist bivalves went extinct. Many mammals and modern birds radiated afterwards.…

    • 236 Words
    • 1 Page
    Satisfactory Essays
    Read More

Related Topics