About 98 per cent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and_______
A. Phosophorus and Sulphur
B. Sulphur and Magnesium
C. Magnesium and Sodium
D. Calcium and Phosphorus
Answer:A
About 98 per cent of the mass of every living organism is composed of just six elements including carbon, hydrogen, nitrogen, oxygen and_______
A. Phosophorus and Sulphur B. Sulphur and Magnesium C. Magnesium and Sodium D. Calcium and Phosphorus