| A | B |
|---|
| ecosystem | all the living and nonliving parts in an area |
| ecology | the study of the relationships among living and nonliving parts of an area |
| habitat | the place where a species lives |
| niche | the role of a species in an ecosystem |
| population | all of the members of one species that live in the same area |
| community | all of the populations living together in one area |
| photosynthesis | the process by which plants use sunlight to make sugar from water and carbon dioxide |
| producer | an organism that uses sunlight to make sugar from water and carbon dioxide |
| consumer | an organism that consumes other organisms for food |
| scavenger | an animal that feeds on the bodies of dead organisms |
| decomposer | an organism that helps to break down and decay dead organisms and the wastes of living organisms |
| water cycle | precipitation, evaporation and condensation |
| omnivore | organisms that eat everything |
| herbivore | organisms that only eats plants |
| carnivore | organisms that only eat meat |
| food chain | how energy passes from one organism to another |
| food web | the relationship between different food chains in an ecosystem |
| respiration | how organisms use sugar and oxygen to release coarbon dioxide water and energy |
| nitrogen cycle | how nitrgen is used and reused in the atmosphere, changed into compounds |
| oxygen | Plants release it during photosynthesis, humans need it to live |
| carbon dioxide | humans exhale it, plants use it during photosynthesis |
| energy pyramid | a diagram that shows different levels of energy |
| amphibian | an animal that starts it's life in water, and can live on both land and water |
| pesticide | chemicals used to controll bugs |
| ozone | layer of the atmosphere that filters out ultra-violet light |
| mutation | a change in an organisms genes or chromosomes |
| bio-indicator | a living creature that tells something about the area it lives in |
| deformity | aweird change in formation or appearance |
| ultraviolet light | deadly rays of light from the sun |
| rain forest | tropical area that is home to many different species |
