Across
- 4. Exercising and being physically fit and healthy
- 6. When two or more parties strive for a common goal
- 8. Number of people living in one spot
- 9. Modifying the characteristics of living things
- 14. Animal or plant that is a mixture of two different breeds or types
- 16. Traits that promote an organisms success in a particular environment
- 17. The action or process of adapting
- 18. Organisms develop further from their earlier forms
Down
- 1. Quality or characteristic
- 2. When humans choose what trait something will have
- 3. All of the people born and living at around the same time
- 5. A group of organisms that can reproduce with each other
- 7. Areas classified by the animals that live there
- 10. A variant of a gene
- 11. When only the strongest will survive
- 12. Making a lot of something that is wanted or needed
- 13. Non living things that affect living things
- 15. Living or once living