| A | B |
|---|
| autotroph | organisms that use energy from sun to make own food, ex. plants, algae and some bacteria |
| producer | another name for autotrophs |
| photosynthesis | the process of using the sun's energy to make carbohydrates. |
| chemosynthesis | organisms use chemical energy to make carbohydrates |
| heterotroph | organisms that need other organisms ,they get energy and food from them |
| consumer | another name for heterotrophs |
| herbivore | organisms that get their energy by eating plants |
| carnivore | organisms that get their energy by eating other animals |
| omnivore | organisms that get their energy by eating both plants and animals |
| decomposer | type of heterotroph that break down organic matter, includes bacteria and fungi |
| food chain | series of steps in which organisms btransfer energy by eating and being eaten |
| food web | links all the food chains in the ecocystem |
| trophic level | steps in a food chain or food web. |
| ecological pyramid | a diagram that shows the amounts of energy |
| biomass | the total amount of living tissue in a specific trophic level |
