Which describes an undernourished person?
a. a child with scurvy
b. a child with rickets
c. an adult who may eat fewer than 2,000 calories a day
d. an adult who gets less energy from food than he or she needs

I just answered this question and the correct answer is D

d. an adult who gets less energy from food than he or she needs.

An undernourished person is the one who receives very low amount of nourishment in the form of essential nutrients like vitamins, minerals, carbohydrates, necessary for the growth and keeping the person healthy. The nutrients are sources of energy which is required by the body of the individual to perform metabolic functions.

On the basis of the above information, an undernourished person is an adult who gets less energy from the food than he or she needs.

correct answer is option a.

tropopause, stratopause and mesopause have all in common aspect that is point of maximum temperature in its layer of the atmosphere. all layers of atmosphere observe abrupt change in temperature. tropopause is the boundary between troposphere and stratosphere. stratopause is the boundary between stratosphere and mesosphere. mesopause is the boundary between mesosphere and thermosphere. these all boundaries are ranges between altitude of 0 to 80 km.