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7 Cards in this Set
- Front
- Back
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time of Cenozoic, age of mammals, and two major events |
65 mya adaptive radiation of mammals, and evolution of humans |
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what two things happened in Pleistocene |
1. ice age( megafaunas roomed) 2. origin of homo |
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time modern humans developed |
200,000 yrs ago |
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When did historical time(agriculture) take place? |
.01 mya |
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what are Pleistocenemegafauna, where do they still exist |
large animals, africa |
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background extinction vs. mass extinction |
background extinction: extinctions that occur at anormal rate high % of species goextinct within a short period of time due to some large event |
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Over the past 40 yrs,66% freshwater fishes went extinct, 25 % land mammals went extinct. Extinctions are due to? |
Extinctions are mostly dueto habitat loss |
