What is the pigment called that protects the body from uv radiation and gives it skin color?

Why do oceanic plates tend to subduction when colliding with a continental plate

Which organelle stores most of a cell’s dna?

Bob, a nutritionist who works for the university medical center, has been asked to prepare special diets for two patients, susan and tom. bob has decided that susan's meals should contain at least 320 mg of calcium, 17 mg of iron, and 42 mg of vitamin c, whereas tom's meals should contain at least 280 mg of calcium, 13 mg of iron, and 34 mg of vitamin c. bob has also decided that the meals are to be prepared from three basic food