Biology unit 8

4. scientific study of interactions among organisms and their environment
5. the scientific study of how living things are classified
12. an organism that feeds on dead organic material
13. organism that eats both plants and animals
14. largest number of individuals of a population that an environment can support
17. all the living organisms that inhabit an environment
18. a biological community of interacting organisms and their physical environment
19. the total mass of organisms in a given area or volume
20. a relationship between two species where both benefit

1. a system of interlocking food chains
2. the non-living parts of an organism's habitat
3. organisms that eat only organisms other than plants
6. organism that obtains energy by eating other organisms
7. one organisms benefits and the other is unharmed
8. the natural home of an organism
9. an organism that decomposes organic material
10. organisms that only eat plants
11. series of steps in an ecosystem where organisms transfer energy by eating and being eaten
15. a relationship where one organism benefits and the other is harmed
16. organisms that obtain energy and nutrients by feeding on other organisms