Pretest

1. the start or cause of something
4. chain: simple model of how energy moves from producers to consumers in an ecosystem
5. all the living and nonliving things in a particular area and how they are related to each other and to their environment
9. relationship: is where one living thing eats another living thing
11. describes the nonliving parts of the environment
12. organisms that get their energy by eating other living organisms
13. is to point out, find, or name something

2. living thing
3. describes the living parts of the environment
6. everything that surrounds a living thing and affects its growth and health
7. an organism, such as a plant that that makes its own food
8. pyramid: diagram that shows how many organisms are in each part of the food chain
9. organism at the beginning of the food chain that make their own food, usually through the process of photosynthesis
10. living thing that breaks down dead plants and animals for food