# Choose the correct statement:

(A) Phosphates have no biological significance in humans (B) Nitrates are less abundant in the earth's crust compared to phosphates (C) Phosphates are less abundant in the earth's crust compared to nitrates (D) Oxidation of nitrates is possible in soil

Answer: (B) Nitrates are less abundant in the earth's crust compared to phosphates
As Nitrates are more soluble in water, they are less abundant in the earth's crust compared to phosphates.