What do you think a soldier firing a missile or a pilot flying a plane must do in order to accurately land the missile or plane at the correct destination?

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There are four nitrogenous bases that make up dna. the two pyramidines are thymine and cytosine. the two purines are adenine and guanine. these bases pair in a very specific way. adenine - thymineguanine - cytosine i remember it like this: a tall, good cat.