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Death Of The Dinosaurs Essay

763 words - 4 pages

What happened to the dinosaurs is a highly controversial issue that we still can’t solve to this day. There are plenty of theories about what killed the dinosaurs. Unfortunately, there is a high margin for error due to the fact that it was 65 billion years ago. The most popular belief is an asteroid wiped out the dinosaurs, but how plausible is this theory?
In Mexican’s Yucatán Peninsula, there is the 110-mile-wide Chicxulub crater. This supports the concept that some extraterrestrial object hit Earth. Using a highly precise dating technique, scientists discovered high amounts of iridium that dates back to the time most of the dinosaurs died off. This means it would have to be a comet or ...view middle of the document...

Since we can’t truly know how many dinosaurs were still alive when the asteroid hit, it cannot be concluded that the dinosaurs were solely wiped out by the asteroid. Although, the biggest misconception is that all the dinosaurs are dead (Than).

(http://en.wikipedia.org/wiki/Tuatara)
In New Zealand, the little creature in the picture above was found. They are called tuataras. Tuataras are part of the Rhynchocephalia order that roamed the earth 200 million years ago. The discovery of tuataras marked a significant finding for scientists. Scientists have been monitoring breeding habits and discovered that tuataras are in extreme danger of extinction. Slight temperatures changes offset the gender of offspring. Currently, the tuatara’s habitat on North Brother Island is low on breeding females. Luckily, some of the creatures have been taken to a zoo where we can incubate them to a specific gender (Hansford).
Considering both the climate change and asteroid theory, it can be assumed the dinosaurs’ time was limited. If the asteroid did not hit, would the dinosaurs have lived much longer? Most likely not. Darwinism would have taken place. In New Zealand, the tuataras were a dominant species. Once mammals, such as rats, cats and stoats, were introduce to New Zealand, the tuatara population was wiped out. Currently, they only prosper on North Brother Island. This...

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