The element present in every organic compound is a) calcium. b) carbon. c) iron. d) oxygen.

Which of the following can be reduced by the use of renewable energy sources? a. social costs b. economic costs c. environmental costs d. all of the above select the best answer from the choices provided a b c d

The third stage of cellular respiration is (2 points)

What problem would a person most likely have if her kidney did not work correctly?