ECOSYSTEMS : Cycles. www.swpc.noaa.gov/. Biochemical Cycling. Cycling of nutrients called biogeochemical cycling Move nutrients from nonliving world to living organisms and back. Without recycling, life could not exist Four biogeochemical cycles Carbon - Nitrogen
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The Earth’s crust is also a reservoir for oxygen storage.
part of wastewater
Result is algae bloom
Chokes waterway with overgrowth