Although a certain molecule is involved in a specific reaction, its structure and chemical composition are exactly the same before and after the reaction. This molecule is most likely made of which macromolecule?

The many stone tools, fragmentary animal bones, and teeth found at gran dolina, spain, indicate that hominids there? a. processed and consumed animals and other hominids. b. did not differ appreciably from earlier asian homo erectus. c. were similar to later homo sapiens. d. none of the above