Answer:
Basal metabolism, Physical activity, Growth, Pregnancy and Lactation.
Step-by-step explanation:
Basal metabolism, Physical activity, Growth, Pregnancy and Lactation are the five factors that determine energy requirements in human beings. To perform daily physical activities, we need a lot of energy which can be taken through breaking of food molecules as well as stored form of macromolecules such as fats and proteins etc. Energy is also needed for the metabolism and growth in humans beings because metabolism and growth processes needs energy.