Which of the following is a micro-nutrient?
Copper
The soil used for agriculture must contain both micronutrients (small molecules) and macronutrients (big molecules) in proper quantities to be considered as fertile soil. They are generally found in the form of salts. Micronutrients are known as trace elements as they are required in very less quantities by the plants. Macronutrients are elements that are required in huge quantities by the plants as they are vital for the production of crops. Examples of these nutrients:
1) Macronutrients - Magnesium, Potassium, Calcium etc.
2) Micronutrients - Manganese, Copper, Zinc etc.