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Extinction is caused by a change in a species environment. The members of a species may not have adaptions that allow them to survive and reproduce in the changed environments.
Extiction may also be caused by catastrophic upheavils that perish the entire living matter of that place and if an organism is localized to that region it may get ileminated.
Wiki User
∙ 10y ago
Wiki User
∙ 9y agoThe extinction of the dinosaurs is thought by some to have been caused by the Earth being hit by an asteroid. The Dodo, and the Passenger Pigeon, were made extinct by over-hunting. There are many species of animals, either extinct or hovering over extinction, even today - most caused by hunting or a shrinking environment as the people expand into the animals territories.
Wiki User
∙ 12y agoMeteor
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The causes of some of the earliest extinctions such as the Permian extinction are because humans started changing the earth?
A+ False
What are some of the causes of background and mass extinctions?
Ice ages, disappearance of prey, floods, and global warming. I hope this helps.
What is the animal group with the most extinctions?
invertabates are the animals with the most extinctions
What was the outcomes of each of the mass extinctions?
The outcomes of each of the mass extinctions is that animal and/or bacteria die.
Do scientists believe that extinctions are uncommon?
No, they are fundamental to the process of evolution. Mass extinctions are less common.
What would survive in a mass extinction?
Typically, cold-blooded animals are more likely to survive mass extinctions than their warmblooded counterparts. Animals who are lower in the food chain are also more likely to survive. Mass extinctions, however, vary in their causes, and so also vary in their effects.
Do extinctions happen frequently?
No
What is a probable cause of two mass extictions?
For all mass extinctions (except the Cretaceous/Paleogene extinction) two probable causes are volcanic eruptions and ocean anoxia.
Have extinctions occurred in the past?
Yes, extinctions have happened throughout history, they are happening today and will continue to happen in the future.
Mass extinctions are usually followed by what?
When there are mass extinctions they are usually followed by adaptive radiation and very rapid diversification. The last mass extinctions happened 65 million years ago.
Why do you think most extinction's occur as background extinctions?
Most extinctions occur as background extinctions because they are longer time periods unlike the shorter mass extinctions which there were only two in the Paleozoic era, the Ordovician mass extinction, and the Permian/Triassic extinction in which 95% of all marine animals became extinct
What can change the food chain?
Extinctions.
