Humans have used rocks in the creation of tools and building materials? true or false

Which of the following is the best definition for the process of photosynthesis? a.) plants digest sugars to make energy. b.) plants use oxygen and glucose to make carbon dioxide. c.) plants use sunlight and carbon dioxide to make sugars. d.) plants use sunlight to make chlorophyll and chloroplasts.

Which characteristics are typical of a human population in the postindustrial stage?

18. which statement about cancer is true?