Across
- 2. Natural selection occurs in microorganisms
- 4. differences among organisms of the same species
- 5. these mice used camouflage to adapt and be less visible to predators
- 6. traits change over time through many generations to help an organism survive
- 11. some insects have become resistant to this
- 12. offspring will die if more are produced than an environment can support
- 14. the invention of which medicine caused changes in bacterial populations?
Down
- 1. these control traits passed on to offspring
- 3. these fish decreased the number of spines they had over time
- 7. inherited characteristics
- 8. theory that suggests species change over time because organisms with traits that are well suited to their environment survive and reproduce more successfully
- 9. fighting for available resources such as food, water and space
- 10. he came up with the theory of natural selection
- 13. what environmental change caused the field mustard population to change?
- 15. True or False-humans can trigger an adaptation