Which one of the following pollutants is responsible for the increase in skin cancer?
a. chlorine monoxide from automobiles
b. polychlorinated hydrocarbons
c. chlorofluorocarbons
d. nitric oxide

Which conditions are necessary for natural selection to occur? select all of the answers that apply. a. inheritable adaptations vary among individuals. b. the population size is increasing. c. more individuals are born than can survive. d. fitness varies among individuals. e. the environment changes suddenly and drastically.

Why is it important to study each branch of earth science?

The ruiz family is exchanging euros for us dollars. the exchange rate is 1 euro equals 1.35261 usd. since the ruiz family knows that usd are stated to the nearest hundredth of a dollar, they used the conversion ratio