While you didn't provide any following sources, healthy sources of energy for humans are usually considered to be different types of fruits and vegetables, lean meats, wholewheat grains, nuts, seeds, and healthy oils. All these constitute a healthy human diet and are a healthy source of energy.
It depends on how fit/active they are but there is no set amount I would say at least 10
Answer:
experiencing a lack of mental concentration
Explanation:
i think
The answer above is major depressive disorder. It is because of this disability, it has brought numerous cases in United States and in the same time, it leads people to do unnecessary things such as suicide because of exhibiting this mental disorder. That is why major depressive disorder is the leading cause of disability.