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Across 2. Gases that are trapped underneath the atmosphere. (2 words) 4. Natural environment that organisms live in. 5. Carbon based or natural resources. 7. An organism that can cause disease. 11. Distruction of forests for logging or agriculture. 12. The 1960's through 70's introduction of pesticides. (2 words) 13. When the ground turns soft like a sponge. 14. The biodiversity, climate, and landscape that organisms live in. 15. The land around a river that catches and filters water.

Down 1. Does not do permanent damage. (2 words) 3. Many organisms living together in an environment. 6. An organism you can see only with a microscope. 8. A group of organisms that can be classified together. 9. An organism that counteracts with living tissue or body systems. 10. A city that includes ten million + people.