Which of the following hormones is produced in the stomach and stimulates hunger?
A) thyroid hormone B) cholecystokinin C) leptin D) ghrelin
Question 2
The requirement for vitamin D increases with age because
A) the kidneys lose their ability to convert it to the active form.
B) the skin's ability to make it from sunlight decreases.
C) the intestines lose their ability to absorb it.
D) All of the answers are correct.