Which rock is useful to scientists for evidence of how plate motions have changed Earth's surface? A. organic shale
B. organic sandstone
C. organic rock salt
D. organic limestone

Explanation:

tuff to be u my g good luck

its 42

i say its d?

what have scientists found to be the most efficient and effective way to insert new sequences into an individual? a-scientists have created genetically altered foods that release dna during digestion. b-scientists use viruses to insert specific gene sequences. c-scientists irradiate genes so that they can be absorbed through the skin.