What is the main function of the respiratory system? a. to exchange oxygen and carbon dioxide gases within the body b. to protect the body against foreign substances, such as bacteria and viruses c. to send signals from one part of the body to other parts of the body d. to break down food into nutrients that can be circulated throughout the body

Ais a person who demonstrates effective communciation, self-directed learning, critical thinking, and responsible citizenship

Melanocytes and keratinocytes work together in protecting the skin from uv damage when keratinocytes a. provide the melanocyte with a protective shield against abrasion b. maintain the appropriate temperature so the product of the melanocyte will not denature c. maintain the appropriate ph in order for the melanocyte to synthesize melanin granules d. accumulate the melanin granules on their superficial portion, forming a uv-blocking pigment layer

The concept of overall includes a person's emotions, social skills, and mental state as well as his physical well being. wealth health condition appearance