Ecosystems Pt. 3

4. The change of a substance from a liquid to a gas.
6. An organism on which a parasite lives.
8. A relationship between two species in which both species benefit.
11. An animal that hunts other animals for food.
12. Evaporation of water from the leaves of a plant.
14. Conversion of nitrates into nitrogen gas done by bacteria.
15. To live together without any problems.
16. Interaction among organisms that need the same resource in an ecosystem.
17. An organism that is killed and eaten by another organism.
20. Water found in the spaces between soil particles and cracks in rocks underground (located in the saturation zone). Natural resource that is used for drinking, recreation, industry, and growing crops.
22. An interaction in which one organism kills another for food.
23. A relationship between two organisms in which one organism benefits and the other is unaffected.
24. A close relationship between two species that benefits at least one of the species.

1. An organism that feeds on a living host.
2. The process of changing free nitrogen gas into a usable form.
3. Any form of water that falls from clouds and reaches Earth's surface as rain, snow, sleet, or hail.
5. The process of rotting.
7. Beneficial interaction among organisms living in a shared area or habitat.
9. The organic circulation of carbon from the atmosphere into organisms and back again.
10. The change from a gas to a liquid.
13. The transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere.
18. The continuous process by which water moves from Earth's surface to the atmosphere and back.
19. A relationship between two species in which one species, the parasite, benefits from the other species, while the host is harmed.
21. Water that flows over the ground surface rather than soaking into the ground.