| A | B |
| ecology | living things interacting |
| population | all members of one species |
| community | living part of ecosystem |
| ecosystem | living and nonliving things in an area |
| individual | one of a specific kind |
| photosynthesis | food making process |
| abiotic factors | nonliving parts of ecosystem |
| habitat | place organism lives and gets things to survive |
| biotic factors | living parts of ecosystem |
| species | group of organisms that are similiar and can reproduce |
| water | makes up 65% of humans |
| sunlight | necessary for photosynthesis |
| oxygen | makes up 20% of air |
| temperature | determines if organism can live in an area |
| soil | mixture of rock, nutrients, water, air, and decaying remains |