The nitrogen cycle is an example of a(n) (biogeochemical / decomposer)

Why does the skin of your finger shrink when you wash clothes for a long time?

What are the two causes of density in deep current waters? a. salinity (how much salt) of the water and high temperaturesb. salinity (how much salt) of the water and low temperatures c. oxygen content of the water and high temperatures. d. oxygen content of the water and low temperatures

Eutrophication caused by human nutrient pollution.