Microbes in Aquatic Environment
The Redfield ratio is an index of concentration of

carbon, hydrogen and oxygen
nitrogen, potassium and iron
carbon, phosphorous and sulfur
carbon, nitrogen and phosphorous

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Microbes in Aquatic Environment
__________ is an environment like __________ where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them.

high oxygen diffusion environment; lakes
low oxygen diffusion environment; soils
low oxygen diffusion environment; lakes
high oxygen diffusion environment; soils

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