Across
- 4. heritable characteristic that increases an organism's ability to survive and reproduce in an environment
- 5. Preserved remains of ancient organisms
- 6. structure that is inherited from ancestors but has lost much or all of its original function
- 9. selective breeding of plants and animals to promote the occurrence of desirable traits in offspring
Down
- 1. Structures that are similar in different species of common ancestory
- 2. Also known as survival of the fittest
- 3. body parts that share a common function, but not structure
- 7. study of past and present distribution of organisms
- 8. how well an organism can survive and reproduce in its environment
- 10. Change over time