Natural Selection
Across
- 4. change over time or descent with modification
- 5. a proposed explanation for an observation which has not been tested
- 6. group of species living in the same area
- 8. a particular characteristic of an individual plant or animal
- 10. a trait that exists in several different morphs
Down
- 1. differences in a species that is passed on
- 2. spontaneously occur from a mistake in the DNA
- 3. Produce more young than will survive
- 7. change to better suit the environment
- 9. individuals that can interbreed with each other