is responsible for the development of male characteristics, including: muscle mass and stregth, fat distribution, bone mass and the sex drive. Estrogen Progesterone Testosterone Nyacin

Ireally need to know this answer asap

As you sit in the library with your friend studying for your weekly quiz on the integumentary system, you come upon an article about the hazards of prolonged exposure to the sun's rays. your curious nature leads you to research the subject further. you're fascinated to learn that minimal exposure to the sun allows you skin to manufacture vitamin d, which is important to maintain homeostasis. you also read that although sunscreen can protect you from the ultraviolet (uv) rays of the sun, some medications can actually increase a person's sensitivity to the sunlight.

The 1.5 mile run test and the 12 minute swim test are considered as what kind of test ?