Extinction Of Species Essay

world is filled with all kinds of mammals, birds, insects, reptiles, amphibians, and fish. There are over one and a half million species already described and documented and believed that there are even more still undocumented today (“Fact Monster Science” 2014). As much as our amazing world offers us, we humans are taking away as well. It is believed that 99.9% of species are now extinct; many of those that occurred over the last 25,000 years can be attributed to humans (“Foundational Concepts”2014)

have shown species are becoming extinct for different reasons. Some species endangered status are created by competition with other species, natural disasters, diseases and even human involvement. These endangered species should be preserved because of the effects it has on other animals, the significance of each animal on the ecosystem, and because of the role humans take on their endangerment. Some people might not know what an extinct species is or why it is important that a species disappears

natural causes like extinctions, climate, and invasive species that change the way organisms live today. 440 million years ago the earth had its first mass extinction, this was during the Ordovician era. The ice caps started growing, taking the water with it. This killed 60 percent of all life. The second extinction took place 360 million years ago among the Devonian

The Sixth Mass Extinction? Is the earth entering its sixth mass extinction? Many scientists think that it’s very clear that we are. There have currently been five mass extinctions, and they all have a huge common factor: they happened over many, many years. Over those many years extreme amounts of species died out. Right now, approximately one third of land animals are decreasing in population numbers. This is just one factor that leads scientists to believe that we are entering, or already in

The Millennium Ecosystem Assessment’s Summary for Decision-Makers brought to light the fact that the rate of species extinction, over time, has increased at an alarming rate. This is distressing because species extinction means loss of biodiversity: a measure of a healthy environment. There are five main drivers, that are interconnected, that influence biodiversity loss and species extinction. While all five are interconnected they are strongly related to one in particular. That driver is human population

much responsible of over hunting for the Late Pleistocene extinction of megafauna of mammoth, slots and Neanderthals in northern Eurasia and North and South America in the last thousands years ago. ‘’ to me the core piece of evidence for human involvement is that when viewed globally, near time extinctions took place episodically, in a pattern not correlating with climatic change or any known factor other than the spread of species. Extinctions followed prehistoric human colonization’s in a ‘’deadly

("About") The Lange's Metalmark Butterfly, specifically located in Antioch Dunes, has been on the endangered species list since 1976 ("Top 10 U.S. Endangered Species Threatened by Human Population"). Without these butterflies, the diversity of wildlife species around the San Francisco Bay Area would cease to exist, and the refuge would become a cement plant (Smith). Currently, there are only about 150 Lange's Metalmark Butterflies living in the wild ("Lange's Metalmark Butterfly"). However, many

The Ethics of De-Extinction The concept of bringing a species back to life after it has gone extinct has been around for years. The idea that dinosaurs will roam the earth again has fascinated mankind since the first dinosaur fossils were first put together. Pop culture has even glorified this idea in a variety of books and movies made about the topic, such as the famous Jurassic Park trilogy. In science fiction, there are many ideas people have about brining the extinct back to life. Some of these

99.9% of all of the species that have existed on earth have gone extinct. (Barnosky, et al) Palaeontologists characterize mass extinctions as times in Earth’s history when the Earth loses more than three-quarters of its species in a geologically short period of time. This has occurred 5 times over the past 540 million years, and scientists are now suggesting it is happening a 6th time. We are in the midst of a sixth mass extinction that has the potential to wipe out many species of importance, and

Pleistocene has been link with the extinction of large mammals, this extinction has been identified as a human-driven process since Paul Martin saw a contributing link between the extinction of large mammalian species and the appearance of humans. However, this does not mean that megafauna was not going to become extinct without human interference. This essay will provide detailed analysis and assessment of the Overkill hypothesis, which argues that the megafaunal extinction in America and Eurasia was caused