D. although protein was part of the composition of the foods in this experiment, it was not the main macromolecule component of the nut or the marshmallow. why do you think this type of food may have been left out, based on what you learned about the way the fuel is "burned" in the body?

Protein may have been left out, because, it is not used as energy in the body, and thus couldn't be measured in the experiment.

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1) the mayans built pyramids just like the egyptians. the mayans also used hieroglyphics like them.2) power was passed down by family. for example, if the father dies, the son would be the next king.3)they both built pyramids for their structures.4)the main crop for the mayans was maize.5)they also grew manioc, beans,  squash,  amaranth, and chile peppers.

Grape jelly so a y did you ask this question