| Term | Definition |
| carnivore | meat-eating animal |
| community | group of living things, both plants and animals, in one area |
| consumer | living things that eat other living things |
| decompser | breaks down dead plant and animal materials; recycler |
| ecology | study of relationship between plants, animals, and the environment in which they live |
| ecosystem | the interaction of plants and animals within an environment |
| energy | required to start the food web; starts with the sun and the process of photosynthesis |
| environment | the surroundings which influence your life (community, living things, consequences of life) |
| food chain | the order in which plants and animals feeds on the one below it |
| food web | a variety of food chains within an ecosystem |
| habitat | natural environment in which plants and animals live |
| omnivore | living things that eat both plants and animals |
| organism | any living thing |
| population | number of living things within one community |
| predator | living animal that hunts other living animals for food |
| prey | hunted animal of predator |
| producer | green plants; use the sun's energy to make their own food(photosynthesis); provide food and oxygen for other living things |
| scarcity | hard to find resource needed for survival |