| A | B |
|---|
| nitrogen cycle | cycle in which a gas in the air is fixed into a form that plants can use |
| evaporation | water turning into a water vapor |
| water cycle | cycle in which water moves through the environment |
| condensation | water vapor turning into water |
| carbon dioxide/oxygen cycle | cycle in which plants turn gas in air into oxygen |
| precipitation | water falling from clouds |
| transpiration | plants losing water through their stomata |
| photosynthesis | plants use sunlight, water, and carbon dioxide to make their own food |
| fossil fuels | energy made through the burning of coal and oil |
| respiration | the process of using sugar (food) to make energy to grow |
