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science c2s2
vocabulary
Term | Definition |
---|---|
water cycle | the continous process in which liquid water moves from earth's surface to the atmosphere and back |
evaporation | the process in which molecules of liquid water absorb energy and change to a gas |
condensation | the process by which a gas turns into a liquid |
precipitation | heavy drops of water falling to earth |
nitrogen fixation | the process of changing free nitrogen into a usable form |