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Carbon, hydrogen and oxygen are mainly obtained from:
AAcid and water
BAir and wax
CAcid and wax
DAir and water
Answer & Solution
Correct answer: D. Air and water
1. The other macronutrients come from the soil.
2. These three come from a different source.
3. They come from carbon dioxide and water.
_Source: NCERT Class 11 Biology, Ch 12 'Mineral Nutrition'_
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