Across
- 4. When a species completely dies out (10)
- 8. The process where certain traits increase survival chances (9)
- 12. When organisms fight for limited resources (11)
- 13. The process by which better adapted individuals survive and reproduce (16)
- 15. Living factors within an ecosystem (6)
- 16. A community of organisms interacting with their environment (9)
- 17. All the individuals of one species in an area (10)
- 18. Characteristics passed from parents to offspring through genes (9)
Down
- 1. Differences between individuals of the same species (9)
- 2. Non-living physical factors in an ecosystem (7)
- 3. An set of organism that definitely did not pass on its genes (8)
- 4. Gradual change in a species over many generations (9)
- 5. The surrounding conditions in which organisms live (11)
- 6. A feature that improves survival in a particular environment (10)
- 7. Units of DNA that determine inherited characteristics (5)
- 8. A group of organisms that can reproduce and produce fertile offspring (7)
- 9. Long-term patterns of weather in a region (7)
- 10. The ability to survive and reproduce successfully (7)
- 11. The natural place where an organism lives (7)
- 14. Variation caused by surroundings rather than genes (13)