| A | B |
| consumer | organism that needs to take energy from another organism |
| heterotroph | organism that feeds on or consumes other organisms |
| herbivores | organism that feeds on plants or algae |
| carnivores | organism that feeds on other animals |
| omnivores | organisms that feed on plants and animals |
| behavior | observable response to a stimulus |
| interaction | condition of acting or having influence on something |
| predator | an animal that hunts other animals for food |
| prey | animal that is hunted by another animal as a source of food |
| migration | the movement of animals to a different region in response to changes in the environment |
| hibernation | a sleep-like state that lasts for a time period |