| A | B |
|---|
| food chain | a group of living things form a chain in which the first living thing is eaten by the second and so on |
| food web | a group of food chains in an ecosystem that are connected |
| ecosystem | all the living and nonliving things in a certain area |
| absorbs | takes in |
| algae | simple living things that are composed of one or more cells |
| ridges | a raised narrow strip |
| predator | an animal that hunts and kills other animals for food |
| scavenger | an animal that feeds on dead animals |
| omnivores | an animal that eats both animal flesh and plants |
| diet | the food and drink eaten by an animal |
