Question

Q. 1) What did you understand by the term macronutrients and

micronutrients?

Q.2) How photosynthesis maintain a balance of O2 & CO2 in atmosphere?​

Answer 1

Answer:

answer1:- Macronutrients are those nutrients that the body needs in large amounts. These provide the body with energy (calories). Micronutrients are those nutrients that the body needs in smaller amounts.Macronutrients are those nutrients required in large amounts that provide the energy needed to maintain body functions and carry out the activities of daily life. There are 3 macronutrients – carbohydrates, proteins and fats. ... Energy comes from foods rich in carbohydrate, protein and fat.

Answer 2:-The balance of oxygen and carbondioxide is maintained in the atmosphere by the oxygen released by plants during photosynthesis and carbondioxide released by human,animals etc. in the atmosphere. Through cellular respiration humans release carbon dioxide (CO2) into the atmosphere.

I hope it help you....