Acondition in which an individual has not slept enough to gain rest within a time period is known as
a. sleep debt
b. sleep deprivation
c. apnea
d. snoring

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.

Which influences are classified as part of your social environment? a) traits b) friends c) habits d) foods? me !

What kind of traffic sign is a red triangle with a white center? a. stop b. yield c. wrong way d. do not enter