click below
click below
Normal Size Small Size show me how
vocab
cycles of nature
Term | Definition |
---|---|
water cycle | model describing how water moves from earth's surface to the atmosphere and back to the surface again through evaporation condensation and precipitation. |
evaporation | the process that takes place when a liquid changes to a gas. |
condensation | the process that takes place when a gas changes to a liquid. |
nitrogen cycle | model describing how nitrogen moves from the atmosphere to the soil to living organisms and then back to the atmosphere. |
nitrogen fixation | process which some types of bacteria in the soil change nitrogen gas into a form of nitrogen that plants use. |
carbon cycle | model describing how carbon molecules move between the living and nonliving world. |
why do plants and animals and other organism require nitrogen | nitrogen helps plants and animals and other organism build cells. |