Ecology

4. The portion of earth that supports living things. It extends from high in the atmosphere to the bottom of the ocean.
7. organisms that can't make their own food - they have to eat
8. web all the possible feeding relationships at each trophic level
9. The place where an organism lives out its life
10. The relationship in which there is a close and permanent association between organisms of different species.
13. A symbiotic relationship in which one species benefits and the other is not harmed or helped
15. All the living organisms that inhabit an environment
17. All strategies and adaptations that a species uses in its environment - how it meets specific needs for food and shelter etc.

1. living things that make their own food
2. they break down and release nutrients from dead organisms
3. Interacting populations in a certain area at a certain time
5. The studying what take place between organisms and their environment
6. A group of organism, all the same species which live in the same area at the same time
8. chain a simple method of what living things eat
11. the total weight of living matter at each trophic level
12. A relationship in which a member of one species derives benefits at the expense of another species
14. The nonliving parts of an organism that are in an environment
16. A relationship where both species benefit