| A | B |
|---|
| ancestor | a person from whom one is descended |
| carnivore | a flesh-eating animal |
| comprehend | to understand |
| duration | the time during which something lasts or continues |
| evident | easy to see and understand; clear |
| extinct | no longer existing or living |
| ferocious | savage; fierce |
| gigantic | very large; huge |
| obscure | to cover up or keep from being seen |
| option | choice |
| premature | too early; happening or arriving before the proper time |
| preserve | to save; to protect |
| prey | an animal that is hunted for food` |
| puny | weak |
| survive | to stay alive where there is a chance of dying |
