Crystalline rocks are natural source of biogenetic elementA. CalciumB. PhosphorusC. MagnesiumD. Sodium

Crystalline rocks are natural source of biogenetic elementA. CalciumB.

1.	Crystalline rocks are natural source of biogenetic elementA. CalciumB. PhosphorusC. MagnesiumD. Sodium
Answer» Correct Answer - b The main source of phosphorus is rocks. Through erosion and weathering phosphorus is made available in the soil.

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Crystalline rocks are natural source of biogenetic elementA. CalciumB. PhosphorusC. MagnesiumD. Sodium

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