Endangered Species: The Primary Mechanism Of Evolution

The fifth part of the evolution theory is natural selection. Natural selection is an idea that life doesn’t require creation or guidance from a supernatural being. Natural selection depends only on nature in which the population will adapt to their environment while the one who are unable to adapt will die off. But natural selection cannot provide perfection but can only help the creatures to evolve just enough to be able to survive.

According to Darwin and his theory on evolution, organisms are presented with nature’s challenge of environmental change. Those that possess the characteristics of adapting to such challenges are successful in leaving their genes behind and ensuring that their lineage will continue. It is natural selection, where nature can perform tiny to mass sporadic experiments on its organisms, and the results can be interesting from extinction to significant changes within a species.

Adaptations are categorized in three postulates, survival of the fittest, variation, and inheritance. If an animal survives long enough to reproduce, it will pass along its genes that helped it survive to its offspring. Eventually over time, these genes will mutate and most of the species will inherit these adaptations. Charles Darwin coined the term "natural selection" in reference to artificial selection

Animals fight for survival daily, and sometimes their lives depend on their ability to adapt with their surrounding environments. Natural Selection is the process in which individuals have certain traits that allow

The Evolution Lab simulates environmental situations to determine effects on evolution over periods of time. This lab experiments with the evolution of finches on two different islands over 100, 200, and 300 years. By manipulating parameters that influence natural selection, the effects that natural selection have on the evolution process can be studied.

• Be able to use the terms variation, adaptation, natural selection, and evolution as they apply to this and

Charles Darwin includes an effective beginning for his work, Natural Selection. By introducing his theory with a set of questions, interest to continue reading is developed. One question Darwin poses is the possibility of how one can survive, taking into account the circumstances of climate and traits. An interesting concept Darwin alludes to is that some individuals possess certain traits that enable them to survive. Another method implemented in the beginning of Darwin’s piece is the broadness of the context. Darwin does not go into any specifics right away, as the reader will learn more as they continue. “Let it be borne in mind how infinitely complex and close fitting are the mutual relations of all organic beings to each other and to their physical conditions of life” (Darwin 900). Darwin accounts for how unique each organism is, but generalizes the statement by categorizing all organisms as complex. By doing this, the reader is inclined to continue

He finally observed that overtime these birds developed different physical characteristics to help them be able to survive and adapt to their surroundings. Darwin developed the “Natural Selection” theory that stated that plants and animals adapt to their surroundings and environments in order to survive. He also stated that older generations of these species would eventually die out, because they do not have the newer characteristics that needed to be developed in order to live.

When Darwin was in the Galapagos he observed variation and adaptation. Where the animals on the island had a variation that will

Throughout evolution, many species have come and gone. What causes a species to become extinct and what can the human race due to prevent it? Many species’ population decline has been linked to human causation. An endangered species is defined as “plant and animal species that are at risk for extinction” (Funk). Endangered species can be placed into two more specific categorizes. Threatened species are species at risk for endangerment, while endangered species are at risk for extinction. Despite the fact that many people believe extinction is a major issue, the Funk and Wagnall’s New World Encyclopedia states that, “extinction is actually a normal process in the course of evolution” (Funk). Over time, numerous species have become extinct, usually as a result of climate changes, inability to adapt, or predation. Another major cause of endangerment is the human population. Pollution, global warming, and hunting is all causing a decline in the population of numerous species. While the encyclopedia is entirely fact based, many authors have worked to sensitize people to threatened species. For example, renowned author Sharon Begley, has written numerous articles to inform people of the importance of many species that are often overlooked.

“If no such variations exist, the population rapidly goes extinct because it cannot adapt to a changing environment” (O’Neil, 1998-2013). Scientists call this reproductive success. “Within a specific environment context, one genotype will be better than another genotype in survival or reproduction for certain reasons having to do with the way its particular features relate to the environment or relate to other organisms within the population” (Futuyma, 2000-2014). The theory of evolution is explicable through various kinds of scientific research.

The process of natural selection is the reason evolution occurs, which also supports the evidences of traits that occur. And for natural selection to take effect, three elements are necessary, and variation is two of these three elements. This specific element expresses that with consideration to specific traits, individual organisms in a population are varied from one another, such as differing from reproduction, fitness, and survival. These traits can be advantages or disadvantages. For instance, an advantage can be having a higher reproductive rates which is a good quality for survival. And in the second element relating to variation, it concurs that variation is passed on from parent to child. So if the parent has traits that has higher reproduction and survival, it passed on to their offspring. And the environment itself is the critical mechanism.The environment impacts which traits

Adaptationism is the belief that the traits seen in organisms are the results of evolution by natural selection. There are different forms of adaptationism and many different definitions as to what an adaptation is, with some believing it is impossible to test a hypothesis about an adaptation at all. This essay will look at a) how to define adaptation b) different forms of adaptationism and c) consider the different methods of testing whether a phenotype is an adaptation.

Since the beginning of life itself, some species have lived and prospered while other species have gone extinct never to be seen again by mankind. Because of this, some would claim that extinction is natural and not significantly problematic to the world that we live in. Others, however, understand that due to climate change, habitat loss, and poaching, more and more species are becoming endangered which leads to a chain reaction that can be devastating to ecosystems. Species such as the Chinook salmon, gorillas, tropical sharks, and polar bears are all directly affected by climate change, species such as northern spotted owls, Sumatran tigers, and lemurs are greatly harmed due to habitat loss, and species such as the sea turtle, Javan rhinoceros, African elephant, and the Red-Fronted Macaw are all affected by poaching driving them all closer and closer to becoming extinct.

You see them in the window. Those big coats with the fur line collar, looking cozy, warm and stylish at the same time. Yet a life had to be given for that coat to be made, the life of the animal that lines that collar. There is no reason for humans to wear fur anymore because it 's expensive, no survival need of it, and overall it is the reason why animals started becoming in endangered. Real fur is no longer needed in today 's society, and we should move past this phase.