Describe the energy transfers that occur during the Krebs (citric acid) cycle. Include a discussion of the cyclic nature of the reaction in the Krebs cycle and the production of ATP molecules.

Scientists discovered fossils in several layers of the earth you see here. they found fossils of algae, snails, and clams in layer d. given that information, where do you think they found fossil evidence of simple land plants and amphibians? a. a b. e c. f d. g