| A | B |
|---|
| cell | smallest unit of life |
| cell membrane | surrounds the animal cell |
| cytoplasm | jelly-like substance inside cell |
| nucleus | controls the activities of the cell |
| vacuole | stores food, water and waste in a cell |
| biotic | living |
| abiotic | non-living |
| population | all members of a single type of living thing in an environment |
| ecosystem | all living/non-living things that interact in an environment |
| terrestrial | land based |
| aquatic | water based |
| estuary | boundary where a fresh water system meets a saltwater system |
| consumers | an organism that eats other organisms for energy |
| herbivores | eats only plants |
| carnivores | eats only animals |
| onmivores | eats plants or animals |
| decomposers | an organism that breaks down other organisms |
| organism | any living thing that can carry out life on its own |
| limiting factors | anything that restricts the growth or survival of a population |
| food chain | the path that energy and nutrients follow in an ecosystem |
| food web | the overlapping food chains in an ecosystem |
| predators | an organism that goes after other organisms |
| prey | the victim of another organism |
| parasite | an organism that lives off another |
| host | an organism that provides life for another |
| population increase | what happens when there is plenty of food, water and shelter |
| population decrease | what happens when there is not enough food, water and shelter |
| pollution | addition of harmful things to an environment |
| natural resources | the things for our use available in nature |
| reduce | use less |
| re-use | use again |
| recycle | use over in another way |
| niche | the specific role or an organism in an ecosytem |
| community | all the organisms in an area |
