natural selection
Across
- 2. develop gradually
- 6. helped develop evolution
- 7. a change or difference in condition
- 11. the process whereby organisms better adapted to their environment tend to survive and produce more offspring
- 12. the action or process of adapting
Down
- 1. statement of species changing over time
- 3. a group of living organisms that are similar
- 4. the action or process of changing
- 5. a theory of evolution based on the principle that physical changes in organisms during their lifetime
- 8. well-substantiated explanation of an aspect of the natural world that can incorporate laws, hypotheses and facts
- 9. transmission of genes from parents
- 10. hidden or disguise