Generally, people have number of melanocytes . About the same; no matter where they live A highly variable; irrespective of where they live A lower; if they live in colder climates of the northern hemisphere A higher; if they live in the warmer climates near the equator A higher; if they live in the southern hemisphere

What are some aquatic organisms that live in cold water temperatures?

Viruses can be transmitted through air, water, food, insect bites, and direct skin contact. once a virus gains entry into the body, it invades a host cell in order to? a. synthesize antibodies for defense b. deactivate the host cell's defenses c. access cell processes for reproduction d. metabolize host proteins and grow

Why do mountaineers become breathless as they reach high altitudes