| Term | Definition |
| Energy | the ability to do work. |
| photosynthesis | putting things together |
| producers | producers create biomass |
| biomass | biomass is the toatal organic matter in an ecosytem |
| autotrophs | self feeders |
| consumers | consumers can not make their own food |
| heterotroph | organism that eat other organism |
| herbivors | they are also known as primary consumers |
| primary consumers | they are the first level of consumers |
| secondary consumers | organisms that eat the consumers that eat the producers |
| carnivores | meat eaters |
| tertiary consumers | animals that feed on the secondary consumers |
| detritus | is the home of the detritivores. |
| detritivores | organism that eat dead material |
| decomposers | because they eat the remains of dead organsims |