Which of the following best explains the importance of earth’s crust to living organisms? a. the continental crust allowed the evolution of life on land. b. the crust provides raw materials necessary for life. c. the crust allowed the formation of fossil fuels. d. the rock cycle recycles sedimentary rocks formed from animal shells.

Which entry is in the wrong position in the table?

What organ is the first to receive nutrients that have been absorbed from the digestive tract?

Which of the following is true of metabolism in its entirety in all organisms? a) metabolism depends on a constant supply of energy from food. b) metabolism uses all of an organism's resources. c) metabolism consists of all the energy transformation reactions in an organism. d) metabolism manages the increase of entropy in an organism.