The 6th Major Extinction An Extinction is when tens of thousands are in danger of dying out completely. A Mass Extinction is when multiple different kind of species die out completely. Human activities do the most damage to animal habitats. Human activities include Illegal hunting‚ pollution from factories‚ and moving in of an invasive species which could mess up the whole ecosystem. Another example of human activities was back in the early 1800s‚ there were about 2 billion Passenger Pigeons
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Animal extinction is happening nowadays due to the multiple factors of environmental degradation. The primary cause of environmental degradation is human disturbance. Extinctions caused by human are generally considered to be are recent phenomena. When humans convert wild areas for agriculture‚ forestry‚ urban development‚ or water projects including dams‚ hydropower‚ and irrigation‚ they reduce or eliminate its usefulness as a habitat for the other species that live there. The temperature of the
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The exact reason for the Pleistocene extinction is still not known‚ this data implies that top-down forces and humans are the reason the extinction happened. This data is important because during the Anthropocene humans continue to put animals at risk for another extinction. The authors used data from the Pleistocene and recent data to show that high rates of predation and humans could have lead to the extinction. Both carnivores and humans caused the extinction‚ because both were competing for prey
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Mutually Exclusive Events Two events are mutually exclusive if they cannot occur at the same time. Another word that means mutually exclusive is disjoint. If two events are disjoint‚ then the probability of them both occurring at the same time is 0. Disjoint: P (A and B) = 0 If two events are mutually exclusive‚ then the probability of either occurring is the sum of the probabilities of each occurring. Specific Addition Rule Only valid when the events are mutually exclusive
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APES Humans’ Affect on Extinction If extinction is a natural part of the world‚ why should we worry about it? Speciation results in new species filling the ecological niche of extinct species. Why should we care if we speed up this process? Biologists say there are four main reasons to care about extinctions. First‚ the world’s species are a vital part of the earth’s life support system. A second reason is that species usually contribute to economic services. The third reason is that it takes
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It is believed Earth may be in the midst of another mass extinction‚ also known as ’The Sixth Mass Extinction ’. This mass extinction is the first for 65 million years since the Cretaceous-Tertiary period. "It ’s the next annihilation of vast numbers of species. It is happening now‚ and we‚ the human race‚ are its cause ’ (Leakey‚ 1995). Every year‚ between 17‚000 and 100‚000 species vanish from our planet‚ which will result in fifty per cent of the Earth ’s species vanishing inside the next 100
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BIRDS TITTLE People have long been inspired by the beauty‚ sond and varied behavior of bird‚ we also recognize that birds provide critucal goods and services in their habits‚ including seed dispersa‚ insect and rodent control‚ scavening‚ and pollination. In addition‚ many bird species are valueable enviromental indicators ‚ warning us of impending enviromental problems BIRDS We are Birds‚ Bird Institude that Reduce their Danger and Suffering‚ We are a global Institude crated in 2002
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The Cause of the Mass Extinction in the Late Cretaceous Period Dinosaurs first appeared around 245 million years ago‚ and they lived for 180 million years. Then suddenly‚ 65 million years ago they went extinct. Not only did all the dinosaurs die out‚ but also up "to 75% of all marine genera were lost" ("mass extinction"). This leaves scientists wondering about what could have led to this mass extinction in the Cretaceous Period. They have collected evidence from fossils and earth’s geography‚ to
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Preventing a Species from Extinction Whether should people prevent a species from being extinct or not seems not a controversial topic. Nowadays‚ a lot of people will agree on protecting endangered species. However‚ most people still have some questions. Why should people prevent a species from extinction? Is it Important? What can humans get from protecting rare species? We can answer these questions from three aspects. People should prevent a species from extinction because humans have the responsibility
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The Top 10 Myths About Dinosaur Extinction Misconceptions About the Extinction of Dinosaurs Cen Chen We all know that the dinosaurs mysteriously (or not so mysteriously) vanished off the face of the earth about 65 million years ago‚ a mass extinction that still lingers in the popular imagination. How could creatures so huge‚ so fierce and so successful go down the drain virtually overnight‚ along with their close cousins‚ the pterosaurs and marine reptiles? The details are still being worked out
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