Evolution and natural selection

4. Primary producers like bacteria, use energy stored in the bonds of hydrogen sulfide to convert carbon dioxide and water into sugars.
7. A relationship in which one organism, (the parasite) depends on another, (the host) for nourishment or some other benefit.
10. Organisms that rely on other organisms for energy and nutrients
11. The process by which an individual of one species, (a predator) hunts, kills, and consumes an individual of the another species, (the prey).
13. Organisms that consume detritus-nonliving organic matter including leaf litter, waste products, and the dead bodies of other community members.
16. The process by which organisms use oxygen to release the chemical energy of sugars like glucose, to release carbon dioxide and water as a byproduct.
17. A long-lasting and physically close relationship in which at least one organism benefits.
19. An organism use of resources and its functional role in a community.
20. Organisms that capture energy from the sun or from chemicals and store it in the bonds of sugars, making energy available to the rets of the community.

1. Most primary consumers that eat plants.
2. A relationship in which one species benefits and the other is unaffected.
3. The process by which primary producers use sunlight to convert carbon dioxide and water into sugars, releasing oxygen along the way.
5. The interaction in which an animal feeds on a plant.
6. Organisms that break down nonliving matter in to simpler parts that can then be taken up and reused by primary producers.
8. Species competing evolve to occupy their realized niches.
9. A relationship in which two or more species benefit.
12. The ability to survive and reproduce under changing environmental conditions.
14. Most secondary and tertiary consumers kill and eat other animals.
15. The process by which two species evolve in response to change to each other.
18. Animals that eat both plant and animal food.