The cycles through which the elements and compounds that make up nutrients move continually. They move through air, water, soil, rock, and living organisms within ecosystems in cycles.
Biogeochemical cycle that collects, purifies, and distributes the earth's fixed supply of water from the environment to living organisms and then back to the environment.
evaporation of water from a plant's leaves
the falling to earth of any form of water (rain or snow or hail or sleet or mist)
the process by which water changes from liquid form to an atmospheric gas
water that flows over land until it reaches lakes, rivers, or other areas
the process of changing from a gaseous to a liquid or solid state
the movement of water from earth's surface into the soil
The downward movement of water through soil and rock due to gravity.
Cyclic movement of carbon in different chemical forms from the environment to organisms and then back to the environment.
the transfer of nitrogen from the atmosphere to the soil, to living organisms, and back to the atmosphere
process of converting nitrogen gas into ammonia
process by which certain bacteria convert ammonium to nitrates
process in which fixed nitrogen compounds are converted back into nitrogen gas and returned to the atmosphere
the cyclic movement of phosphorus in different chemical forms from the environment to organisms and then back to the environment