Extinction events

contributing influence. Predominantly we rely on one measure to compare the rate of species loss between various moments in history. The background rate of extinction is approximately 1 extinction per

decimation have totaled to five individual instances throughout the existence of life on Earth. Many scientists agree in saying that, humans as species are the main cause for current sixth mass extinction. Some opponents to this theory claim that label of our worldwide ecological state as a ‘sixth mass extinction’, is just an “emotional charge that makes the problem seem cosmic and overwhelming” (Brand). This however is not a legitimate statement when taking into account the sheer magnitude of human

and 900m deep could just vanish just from sight. There have been many different dinosaur extinction theories offered in the recent decades. These range from poisonous plants to mass suicide by dinosaur herds. Although one concept as to how the dinosaurs became extinct has gained a wide acceptance since the 1980’s, involving a major earth impact by a meteor or comet (Icr.org, 2014). This horrific catastrophic event is thought to have extinguished up to two thirds of all animal and plant species, leaving

The Choloepus sloth is a rare but very interesting mammal. The sloth has an interesting diet, it only consumes of tough leaves, it could take up to a month for a sloth to digest its meal.The Sloths ancestors lived in North America. Sloths like sleeping in the fork of a tropical tree while curled into a ball. Another way that the sloths like to sleep would be by hanging from their feet from tree branches. “The two-toed sloth is slightly bigger than the three-toed sloth, though they share many of the

been living in, slowly creating a bleak future for the new generations to come. I was a young child, unaware of the danger of just breathing the air and how dirty the world has become over the last few hundred years. Eventually, a life-threatening event changed that view forever and urged me to take a stance on the topic of pollution, changing my views and having a huge impact on my future. Before long, I had become an advocate of preventing the pollution of our wonderful home, Earth. When I was

Cretaceous-Tertiary extinction or K-T extinction, which marks the Late Cretaceous, is a massive and large-scale extinction of animal and plant species that occurred over a short period of time 66 million years ago. The fossils of non-avian dinosaurs (the Group of birds) found almost only below the K-T boundary, paleontologists mostly estimate that the dinosaurs were extinguished just before, or during the event. Scientific theories explain the extinctions of K-T by one or more catastrophic events, such as massive

been living in, slowly creating a bleak future for the new generations to come. I was a young child, unaware of the danger of just breathing the air and how dirty the world has become over the last few hundred years. Eventually, a life-threatening event changed that view forever and urged me to take a stance on the topic of pollution, changing my views and having a huge impact on my future. Before long, I had become

The Triassic-Jurassic extinction occurred about 210 million years ago, killing about 80 percent of all living species (“End-Triassic Extinction”). Most species were hit hard, but there were no major full-on extinctions. Still, cephalopods, sponges, corals, reptiles, and pollen and spore producing plants were hit hard. The dinosaurs, however, were lucky and survived the extinction intact. This allowed them to reign supreme for the next geological epoch (“End-Triassic Extinction”). During the time of

boundary extinction happened approximately sixty five million years ago. Sixty to eighty percent of all living species became extinct at this boundary (Raup 1988). The KT extinction was indeed a mass extinction event. Mass extinctions are periods in Earth's history when extremely large numbers of species die out simultaneously or within a limited time frame. The most severe mass extinction ever occurred at the end of the Permian period when 96% of all species died out. The K-T mass extinction obliterated

However through this course of time, mass extinctions have taken place on planet Earth. One of the most recent mass extinctions, has as a matter of fact left various amounts of evidence of the creatures which roamed the Earth at that time. Such magnificent creatures which varied from a very small size to giant sizes. Creatures which are now known to humanity as dinosaurs. The name of this extinction was the Cretaceous-Tertiary Mass Extinction. This extinction took place roughly sixty five million years