Across
- 6. a change that only affects ecosystems for a couple of years
- 8. different groups in the human body
- 9. mental and physical traits passed on from generation
- 10. the basic unit of life
- 11. a change that affects multiple generations
- 12. when one organism suffers and one benefits
- 13. groups of different cell types/organisms
- 14. when grasses form on rock forming ecosystems
- 15. traits are passed on from organism to organism
Down
- 1. an organisms traits changing depending on its environment
- 2. when one organism is unaffected and one benfits
- 3. the amount of different organisms in an ecosystem
- 4. when both organisms benefit working together
- 5. an environment where abiotic and biotic factors live
- 7. favorable traits are passed on