Across
- 3. To be caused by nature
- 4. Different species interacting
- 8. To be overrun by a large number of pests
- 12. Derived from a primary source
- 13. To suddenly and violently break out
- 14. Communities of living organisms interacting with each other and the environment
- 15. something that is first
- 16. Period of low precipitation
Down
- 1. Heritable traits
- 2. favouring specific traits for survival
- 5. Spreads aggressively
- 6. Destruction of standing forests
- 7. To first develop
- 9. Biologic community change over time
- 10. Lives in or on a host
- 11. To be fully grown