| A | B |
| chlorophyll | a green material in plants that traps energy from sunlight and gives plants a green color |
| carbon dioxide | a gas in the air |
| photosynthesis | the way in which green plants trap the sun's energy and use it to change carbon dioxide and water into sugar |
| producer | a living thing that can use sunlight to make sugars |
| consumer | a living thang that depends on producers for food |
| herbivore | a consumer that eats only producers |
| carnivore | a consumer that eats only other consumers |
| omnivore | a consumer that eats producers and other consumers |
| food chain | the path energy and materials take in a community |
| predator | a consumer that hunts, kills, and eats other animals |
| prey | the animal that predators hunt and eat |
| decomposer | a consumer that puts materials from dead plants back inot soil, air, and water |
| algae | a group of producers that live in the oceans and other water |
| food web | the flow of energy and materials through food chains that are connected |
| pollution | the addition of harmful substances to a community |