3. Which environmental factor(s) affect skin color? A. Sunlight
b. Ultraviolet light
c. X-rays
d. All of the above

What food can provide the body with a quick source of the energy needed to carry out cell functions (a) whole grain bread (b) ground hamburger (c) vegetable oil (d) whole milk

What is the function of nucleic acids

Look at the photo of the leaf. which term best describes this leaf?