Biodiversity Questions Essay Student’s Name Institution Date Introduction It appears that earth’s species are vulnerable from extinction. Whereas natural events such as asteroid collisions can lead to extinction it also emerges that human activities cause species to disappear. This essay is going to evaluate the major extinction periods and the species affected during those events. It will also discuss global climate change and the green house effect human activities contributing to the generation of the green house gas and how humans are responsible for climate change. Part I: Geologic history of the globe’s major events Major mass extinction periods Five major mass extinctions have taken place and they include the end-cretaceous late Devonian end-Ordovician end-Triassic and end-Permian end-Triassic (Sam Noble Museum n.d. a). Out of the five four were partly caused by climate change due to global warming as was the case with the end-Permian and end-Triassic. The end-Cretaceous mass extinction event under way scientists warn. Retrieved from https://www.theguardian.com/environment/2017/jul/10/earths-sixth-mass-extinction-event-already-underway-scientists-warn Ceballos G. Ehrlich P. R. & Dirzo R. (2017). Biological annihilation via the ongoing sixth mass extinction signaled by vertebrate population losses and declines. Proceedings of the National Academy of Sciences of the United States of America (PNAS) 114(30) E6089-E6096. NASA. (2018). Causes: A blanket around the earth. Retrieved from https://climate.nasa.gov/causes/ Sam Noble Museum. (n.d. a). Mass extinctions. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/ Sam Noble Museum. (n.d. b). End-Ordovician extinction. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-ordovician-extinction/ Sam Noble Museum. (n.d. c). Late-devonian extinctions. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/late-devonian-extinctions/ Sam Noble Museum. (n.d. d). End-permian extinction. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-permian-extinction/ Sam Noble Museum. (n.d. e). End-triassic extinction. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-triassic-extinction/ Sam Noble Museum. (n.d. f). End-cretaceous extinction. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-cretaceous-extinction/. Sam Noble Museum. (n.d. g). Extinctions in the recent past and the present day. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/extinctions-in-the-recent-past-and-the-present-day/ Sam Noble Museum. (n.d. h). Extinctions on Islands. Retrieved from http://samnoblemuseum.ou.edu/understanding-extinction/extinctions-in-the-recent-past-and-the-present-day/extinctions-on-islands/ [...]
Organize this essay assignment using subtitles that summarize the topic from each question above. For example, to answer Question 1, use a descriptive subtitle like the following: Part I: Geologic History of the Earth/Major Events. Please see attachment for additional details.