| A | B |
|---|
| producer | organism that makes its own food |
| consumer | an organism that obtains its energy by feeding on other organisms |
| herbivores | consumers that eat only plants |
| carnivores | consumers that eat only animals |
| omnivore | a consumer that eats both plants and animals |
| scavenger | a carnivore that feeds on the bodies of dead organisms |
| decomposers | organisms that break down wastes and dead organisms and return the raw materials to the environment |
| food chain | series of events in which one organism eats another an obtains energy |
| food web | consists of the many overlapping food chains in a ecosystem |
| energy pyramid | shows the amount of energy that moves from one feeding level to another in a food web |
| autotroph | a producer-make own food for energy |
| heterotroph | a consumer-eats other organisms for energy |
| 10% | amount of energy passed from one level to the next of the food chain |
| 90% | amount of energy used by organisms for growth, repair, activity, and reproduction |
| sun | source of most energy comes to us from the producers or autotrophs |
| primary or first level consumer | eats only plants and follows the plants in the food chain |
| secondary or second level consumer | can be an omnivore or carnivore and comes after the primary consumer in the food chain |
| third level consumer | can be an omnivore or carnivore and follows the secondary consumer in the food chain |
| top level consumer | organism at the end of the food chain, less of them than any others |
| autotroph | another name for a producer that can make its own food |
| heterotroph | another name for a consumer that eats other organisms for food |
