09/29/16
RFJ 5 Mass extinctions are a number of events in which a large percentage of the species on the planet go extinct and have a great impact on today’s living things. There have been at least five mass extinctions recorded in the history of the Earth thus far. The earth lost more than 75 percent of its species. It is being debated that we are currently in the sixth mass extinction. Graptolites, it began with the filtered-fed animals and colony builders, which disappeared over a million years. It is speculated that the cause is from a short severe ice age that lowered sea levels which possibly caused by the lifting of the Appalachians. It absorbed the carbon dioxide from the atmosphere causing a rapid climate change, freezing …show more content…
The cause of the extinction is said to probably be from the new plants that had grown and blanketed the planet. The roots of the newly grown plants released nutrients into the ocean, which sucked all of the oxygen from the ocean and suffocating all of the ocean’s living organisms. The third mass extinction, which occurred during the end of the Permian period, also known as the “the great dying” was identified as the worst extinction event ever nearly wiped out life on earth. A series of natural disasters were the cause of this event. A deadly eruption near Siberia, sprayed carbon dioxide into the air, methane released into the greenhouse, and the global temperatures spiked while the oceans became acidic, killing off the coral reefs and destroying the coal deposits. During the end of the Triassic period, 80 percent of the species disappeared, the cause of the extinction still is clear. Creataceous period ended, wiping out 76 percent of life. Volcanic activity and climate change was responsible for the stressed ammonites, and asteroids had a deadly impact, which took out the dinosaurs. Though there are ammonites that remain on this earth, but can they withstand extinction? Climate is an important part of our environment and