The answer is c because boy have the same rock layer you can use they key to help you
Answer:
A. It's a reliable source because it's from the government, not a website based on other people's opinions.
It is important because we need to learn the environment, what is around us.
Adenine always pairs with Thymine, and Cytosine always pairs up with Guanine in DNA. When dealing with RNA, however, Uracil replaces Thymine. So in RNA, A pairs with U and C pairs with G. (just a fun fact) :)
