How many smoke alarms and fire extinguishers should be in each home? one per floor

three per room

none

a maximum of two

Identify two ethical principles that can teens deal with difficult decisions

Antibiotics are given when an std is caused by a virus. true or false

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.