Multiple Choice
Fertilizers generally have three numbers on the label (for example, 20:10:20) . These numbers refer to the three most essential plant nutrients, which are
A) nitrogen, phosphorus, and potassium.
B) nitrogen, calcium, and magnesium.
C) oxygen, hydrogen, and calcium.
D) potassium, phosphorus, and iron.
Correct Answer:
Verified
Correct Answer:
Verified
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