Across
- 1. remains of a plant or animal that existed in a past geological age and that has been excavated from the soil.
- 5. by human beings and not nature.
- 6. or occurring in a normal way.
- 7. or charaistic.
- 8. in a kind of organism over time.
- 10. physical condition.
Down
- 2. that explains something and is supported by data.
- 3. fully developed in mature animals.
- 4. charaistics tahat increases an organisms chance of survival.
- 9. to refer to chromosomes in which one set comes from the male parent and the other comes from the female parent.