Healthy Ecosystems

4. a substance that an organism needs to grow and maintain its body
6. a group of organisms of the same species in a given area
8. a group of similar organisms that can mate and reproduce more of the same type of organism
10. the study of relationships between organisms and their environment
11. an animal that is hunted by a predator
13. an organism that hunts other living things for food
14. organism, a living thing that is small and must be viewed with a microscope

1. an interaction between individuals of different species that benefits both individuals
2. the network of interactions that link the living and non-living parts of an environment
3. when one or more organism tries to obtain the same basic resources in the same habitat
5. a group of populations of a different species in a given area
7. element, any non-living component of the environment
9. a living thing
12. element, any living thing found in the environment