4) If all living things have all types of biomolecules, and our food comes from living things, shouldn't all food items test positive for most or all of these? (you may have heard about people talking about "clean" or "whole foods vs. processed that
applies here):

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