Unit 1 Review

3. The variables that have to be kept the same in an experiment
4. Living things must maintain internal balance such as their temperature or fluid levels
5. Another term for an autotroph
6. All the living and nonliving things in an environment
11. The variable that an experimenter changes in an experiment
12. A relationship in which one organism is harmed and the other benefits
13. The living parts of an environment
15. All the living things in an environment
16. The type of growth that occurs when a population has no limiting factors
17. A consumer that eats producers in a food web

1. The nonliving parts of an environment
2. Another term for a heterotroph
4. Organisms, like animals, that have to eat other producers to consumers to get their food
7. The variable that you measure in an experiment
8. The type of growth that occurs when a population has reached carrying capacity
9. A relationship where both organisms benefit each other
10. The amount of energy that is passed from one trophic level to the next
14. Organisms, like plants, that make their own food through photosynthesis