| A | B |
|---|
| Producer | An organism that makes its own food |
| Consumer | An organism that gets energy by eating other organism |
| Herbivore | An organism that eats only plants |
| Omnivore | An organism that eats both plants and animals |
| Decomposer | An organism that gets energy by breaking down dead organisms |
| Cellular Respiration | Process of breaking down food molecules to release energy |
| Succession | A regular pattern of changes over time in the typres of species in a community |
| Climax Community | A stable community that forms if land is left undisturbed |
| Pioneers | The first organisms to colonize a newly available area |
| Carnivore | An animal that eats only other animals |
| Food Chain | A sequence in which energy is transferred from one organism to the next as each organism eats and is eaten |
| Trophic Level | Each step in the transfer of energy through an ecosystem |
| Water Cycle | Process where water circulates between the atmosphere and the earth |
| Precipitation | Rain, Sleet, Hail or Snow |
| Nitrogen-fixing Bacteria | Organism that can use nitrogen gas directly from the atmosphere |
| Secondary Succession | The pattern of change in an area where an ecosystem has previously existed |
| Food Web | A system of overlapping food chains |
| Photosynthesis | Process where plants make food by capturing the energy from the sun and using carbon dioxide and water |
