Which of the following contain macro-nutrients only?
A. Calcium, sulphur and zinc
B. Nitrogen, phosphorus and potassium
C. Calcium, magnesium and copper
D. Nitrogen, iron and chlorine
Answer:B
Which of the following contain macro-nutrients only?
A. Calcium, sulphur and zinc B. Nitrogen, phosphorus and potassium C. Calcium, magnesium and copper D. Nitrogen, iron and chlorine