They need complimentary base pairs. Scientists use these pieces to compare DNA
Answer:
The answer is D.
Explanation:
Reproductive isolation is where a species can't breed with any other species except its own.
For Ryan to meet his grain requirements, Oatmeal, whole grain bread and sweet portrait would be his best choice in a single day. This would make his m get energy because it is a carbohydrates. An energy giving food.
The answer is C. the atmosphere cause without it we wouldn't be able to breathe