Scientists combine evidence from fossils, body structures, early development, DNA, and protein structures to:a. determine what bones an animal has in its forelimbs. b. determine the evolutionary relationships among species. c. decide which fossils are older than others. d. determine whether an organism will have gills during its early development.

Why are carbon dioxide concentrations expected to increase? a carbon dioxide concentrations are expected to increase, because fossil fuel burning is expected to increase b. carbon dioxide concentrations are expected to increase, because of an increase in agriculture. c.carbon dioxide concentrations are expected to increase, because more land will have to be cleared for increasing populations and agricultural use. d. all of the above select the best answer from the choices provided mark this and return save and exit next submit submit