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Tropical rain forest
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∙ 12y ago
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Past mass extinctions most likely occurred as a result what?
Sudden changes in environmental conditions.
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.
Does natural selection occur in the world today?
Yes, natural selection is always occurring.
How may the Earth's position in space be related to the cycle of extinctions earth?
How may the Earth's position in space be related to the cycle of extinctions on earth
Why many scientists believe that something other than asteroids have caused most of the catastrophic extinctions of the Earth's past?
Well because there is no proof.
What is the animal group with the most extinctions?
invertabates are the animals with the most extinctions
Have extinctions occurred in the past?
Yes, extinctions have happened throughout history, they are happening today and will continue to happen in the future.
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 has changed most of the mass extinctions on earth?
climate change
What is the process that Earth's processes occurring today are similar to those that occured in the past?
Uniformitarianism: a principle stating that earths processes occurring today are similar to those that occur in the past
What is the principle that earth processes occurring today are similar to those that occured in the past?
Uniformitarianism: a principle stating that earths processes occurring today are similar to those that occur in the past
Past mass extinctions most likely occurred as a result what?
Sudden changes in environmental conditions.
Does genocide occur in the world today?
yeah its occurring in Darfur
Where is fission occurring today?
In every nuclear reactor that is operating
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 effort are are you aware of that are being made today to avoid large scale extinctions like the ones described in the excerpts?
This cannot be answered. You will have to write this where it can be understood.
