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Soil

The major res...

Question

The major reservoir for phosphorus is

A

the clouds

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B

soil and rocks

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C

the atmosphere

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D

the sun

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Solution

The correct option is B
soil and rocks

Phosphorus reservoirs are found basically in soil and sedimentary rocks, because unlike the other nutrients that cycle through the biosphere, phosphorus cannot be found in air in the gaseous state. This is because phosphorus is usually solid at normal temperatures and pressures, it is highly reactive and combines with other elements to form acids and salts. Therefore it mainly cycles through water, soil and sediments.

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