Ecology Unit

1. organism capable of self nourishment by using in organic materials as a source of nutrients and using photosynthesis or chemosynthesis as a source of energy as most plants and certain bacteria and protist
3. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms
5. a living thing , as an animal or plant , that affects an ecosystem
6. the ecosystem comprising the entire earth and the living organisms that inhabit it
7. plant and meat eater
8. all the individuals of one species in a given area
11. a type of relationship between two species of a plant ,animal , in which one lives in , on , or in another without damage to either
14. a system formed by the interaction of a community , of organisms with their environment
16. the position or function of an organism in a community of plants and animals
18. a relationship between two species of organisms in which both benefit from the association

2. an organism requiring organic compounds for its principal source of food
4. a relationship between animals in which one organism captures and feeds on others
5. an interacting group of various species in a common location
9. plant eaters
10. a relation between organisms in which one lives as a parasite on another
12. the living together of two dissimilar organisms, as in mutualism , commensalism , or parasitism
13. a complex biotic community characterized by distinctive plant and animal species and maintained under the climatic conditions of the region , especially such a community that has developed to climax
15. meat eater
17. the natural environment of an organism , place that is natural for the life and growth of an organism