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Across 2. An element that is cycled 3. Competition between the same species 4. Cutting down trees 6. Organisms biochemically adapted to survive in harsh environments 7. Variety of organisms living in a habitat 9. Non living factor in an ecosystem 11. Characteristic which enhances survival chances 12. Increasing population growth 13. Host is harmed from the presence of another organisms 14. Rainfall

Down 1. Competition between different species 2. (2 words) predator prey pattern 5. Growing one crop in a field 8. Species that shows the level of pollution in an ecosystem 10. Habitat including abiotic and biotic factors