Across
- 2. he process through which populations of living organisms adapt and change
- 4. fossils remain of lifeforms that show features typical of two distinct groups.
- 5. a condition where a gene is not changing in frequency across generations.
- 10. Features of various species that are similar in function but not necessarily in form.
- 11. a rapid increase in algaes amount in a body of water.
- 12. a group of similar organisms that are able to reproduce.
- 13. fossils used to define and identify
- 15. a theory that describes all living things that exist today developed from earlier types.
Down
- 1. organs of the body which are smaller in related species.
- 3. rocks formed near or on Earth's surface.
- 6. a supercontinent that involved almost all the landmasses on Earth.
- 7. body parts of animals that have a similar structure.
- 8. selective breeding
- 9. a water-based ecosystem does when too many nutrients are added to it.
- 14. the ability for an organism to survive and reproduce