| A | B |
| biogeochemical cycle | involves the movements of organic and inorganic chemicals through the lithosphere, hydrosphere, atmosphere, and biosphere |
| reservoir | places where various chemicals are stored |
| water cycle | continuous movement of water through reservoirs in the spheres |
| evaporation | changing of liquid to a gas |
| transpiration | movement of water from plants into the air |
| condensation | cool air causes water vapor to change to a liquid |
| precipitation | liquid that falls to the earth |
| nitrogen cycle | continuous movement of nitrogen through each of Earth's systems |
| carbon-oxygen cycle | continuous movement of oxygen and carbon through all of Earth's systems |