the continuos process where water moves from Earth's surface to the atmosphere and back.

the process where liquid water absorbs energy and changes to gas

the process where a gas changes to a liquid.

the process where water vapor condenses, and eventually drops back to Earth.

the process of changing free (un useable) nitrogen from the air into a usable form of nitrogen by organisms and the ecosystem.

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Eco. Cycles

Key Words- Water Cycle, Nitrogen Cycle, Oxygen Cycle

Question	Answer
water cycle	the continuos process where water moves from Earth's surface to the atmosphere and back.
evaporation	the process where liquid water absorbs energy and changes to gas
condensation	the process where a gas changes to a liquid.
precipitation	the process where water vapor condenses, and eventually drops back to Earth.
nitrogen fixation	the process of changing free (un useable) nitrogen from the air into a usable form of nitrogen by organisms and the ecosystem.