| Term | Definition |
|---|
| extirpation | when an animal is actively removed from a portion of its range |
| extinction | no possible way the species can continue, completely dead |
| functional extinction | still around in low numbers but not possible to comeback |
| Permian Extinction | 300-240 mya - took 60 million years mass extinctions can happen over long periods of time |
| Thecodants | ancestors to dinosaurs |
| Triassic extinction | killed off the most dominant vertebrates - dinosaurs |
| Cretaceous extinction | bollide asteroid collides with earth made of ice, left a 6 mile wide crater in the gulf of mexico, took three years for the ash and dust to settle killing cold blooded animals and plants |
| extirpating pressures | encroachment & proximity, hunting, and trade (exotic pets & black markets) |
| genetic homozygosity | basically clones, not enough genetic diversity in the population and extremely inbred |
| Mass extinction we are presently in is the.... | sixth |
Combine with other sets
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