| Term | Definition |
| sun | all food chains and webs start w/ energy from the sun(except in deep ocean trenches) |
| producer | plants that use photosynthesis, to make food w/ the suns energy (ex. grass, wild flowers, oak tree) |
| consumer | organisims that eat |
| herbivore | organisms that eat plants (AKA producers) |
| carnivore | eats only meat (animals) |
| omnivore | an animal that feeds on both animal and vegetable substances |
| decomposers | break down wastes and remains of other organisms(ex. sow bugs, worms, mushrooms) |
| 1st order consumer | herbivore eats plants (ex. bees, squirells, chipmunks) |
| 2nd order comsumer | eats 1st order consumer (ex. ants, spiders, woodpeckers) |
| 3,4,5,6 | eats order that is lower than itself |
| third order | crow, snake |
| apex consumers | owl, hawk, great white shark |