| A | B |
| Ecosystem | the living and non-living factors in an area |
| photosynthesis | a process that transforms light energy into sugar |
| respiration | a process that uses oxygen to transform chemical energy in sugar to energy usable by an organism |
| autotroph | organism that make their own food |
| producer | organism that makes their own food |
| hectotroph | organism that get their energy by eating other organism |
| chemosyntheses | a process that transforms the energy in inorganic chemicals into energy available to organism in organioc chemicals |
| Glucose | A sugar that is used by most organism for energ (C6H12O6) |
| Food Chain | a sequence in which energy is transfered from one organism to the next as each organism eats another |
| Food web | Shows all the feeding relationshipo in an ecosystem |
| Trophic level | steps in the trensfer of energy through out an ecosystem |
| Bioaccummulation | the process that needs to increasing concentrations of a chemical in an organism over time |
| 90% | about the amount of energy lost from one trophic level to the next |
| Primary Consumer | These organism eat producer |
| Secondary Consumer | These organism eat creatures that consume producers |
| Tertiary consumer | Organism that tend to be at the highest trophical level |