Someone take the time to give me the answers to these questions pls

Which of the following is a macronutrient? carbohydrates lipids amino acids all of the above

Why are scientists concerned about the depletion of the ozone levels in the stratosphere?

One function of the immune system is to attack the foreign cells to protect the body. in organ translate , the body recongnizes that the new organ is made of foreign cells. wha kind of medicine would you give a patient to increase the chances of transplate success