The amount of carbon removed by forests in the United States each year is equal to . A. 3390 semi-trucks full of carbon b. 150 million metric tons c. 80% of the carbon in the atmosphere d. 1300 semi-trucks full of carbon.

Which of the following matches the organisms described with the correct domain? a. archaea--multicellular, eukaryotic organisms that do not have cell walls b. eukarya--single-celled and multicellular organisms, with a defined nucleus and a variety of nutritional sources c. bacteria--unicellular, eukaryotic organisms with cell walls that do not contain peptidoglycan d. bacteria--unicellular, eukaryotic organisms that always lack cell walls