Ecology

6. a relation between organisms in which one lives as a parasite on another.
7. the position or function of an organism in a community of plants and animals.
10. biological diversity among and within plant and animal species in an environment
11. the living together of two dissimilar organisms, as in mutualism, commensalism, amensalism, or parasitism.
12. the ecosystem comprising the entire earth and the living organisms that inhabit it.
14. an organism, as a plant, that is able to produce its own food from inorganic substances.
16. the branch of biology dealing with the relations and interactions between organisms and their environment, including other organisms.
17. an organism, usually an animal, that feeds on plants or other animals.
18. of or characterized by the absence of life or living organisms.
19. a relationship between two species of organisms in which both benefit from the association.
20. eats both plants and animals

1. a system, or a group of interconnected elements, formed by the interaction of a community of organisms with their environment
2. the natural environment of an organism; the place that is natural for the life and growth of an organism
3. an assemblage of interacting populations occupying a given area.
4. pertaining to life.
5. Animal that only feeds on animals or other meats
8. 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.
9. animal that only feeds on plants.
13. the assemblage of a specific type of organism living in a given area.
15. a type of relationship between two species of a plant, animal, fungus