Question

why macro nutrients are called as macro nutrients?

Answer 1

Because the term macro is big and as we know that the nutrients which require high amount of nutrients known as macronutrient s.

Answer 2

Macro nutrients are the nutrients which are required by the plant In large quantities(amount.).These are called so because Macro means more and these nutrients are required in large quantities so they are called macro nutrients.For eg-nitrogen,phosphorus,calcium etc.