Which statement is true about nitrogen and oxygen
a. neither contains subatomic particles
b. they are both made of portions, neutrons, and electrons
c. they are both used to make water molecules
d. they make up about 99.9% of the human body

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