1. The Industrial Revolution did not solve the world's hunger problems because
a. The farmers didn't want to sell most of the food
b. The machines had problems that had to be fixed
c The population of the world increased
d. All of the above

Does the sun release radiant energy?

What is true of all organisms in the kingdoms protista, plantae, fungi, and animalia? a. they are multi-celled. b. they are photosynthetic. c. they have cells that contain membrane-bound organelles. d. they contain cells that lack membrane-bound organelles.

Which of the following statements about archaea and bacteria is true? a. neither is single-celled. b. they both have nuclear membranes. c. neither reproduces by binary fission. d. they both lack a nuclear membrane.