SELECT * FROM question_mgmt as q WHERE id=4302 AND status=1 SELECT id,question_no,question,chapter FROM question_mgmt as q WHERE courseId=8 AND subId=16 AND chapterId=195 and ex_no='3' AND status=1 ORDER BY CAST(question_no AS UNSIGNED) CBSE Free NCERT Solution of 9th science Improvement in Food Resources what are macro nutrients and why are they called m

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What are macro-nutrients and why are they called macro-nutrients?

Answer:

Nutrients required in large quantities are called Macro-nutrients. They are six in number. Since they are required in large quantities, they are known as macro-nutrient. The six macro-nutrients required by plants are nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur.


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