His main way of communicating was through his firesides on the radio to the American people.
Answer:
Cellular respiration is a set of metabolic reactions and processes that take place in the cells of organisms to convert chemical energy from oxygen molecules or nutrients into adenosine triphosphate (ATP), and then release waste products.
Explanation:
zinc = vision problems
calcium = bone thinning
vitamin a = poor wound healing
potassium = problems with fluid balance