Across
- 4. a trait that develops over time and and allows organisms to better survive in a new or changed environment
- 5. an external force that impacts an organisms ability to survive, leading to natural selection (2 words no space)
- 8. the ability of a trait to be passed down from one generation to the next
- 10. humans selecting favorable traits in animals or plants and breeding organisms with those traits (2 words no space)
- 12. the differences that exist in every population(one of the principles of natural selection)
- 13. populations having offspring that are slightly different than their parents (one of the principles of natural selection) (3 words, no spaces)
Down
- 1. all of the individuals of a species that live in the same area
- 2. mechanism by which organisms produce beneficial adaptations that help them survive better (2 words no space)
- 3. when small plots of soil are spread apart from each other
- 6. the process of increasing an urban area
- 7. relating to a large city
- 9. production when a population of organisms has too many offspring (one of the principles of natural selection)
- 11. a measure of an organisms ability to survive and produce more offspring