What is the compliment base of thymine

Adenine

Explanation:

In the DNA molecule there is the pairing of a purine nitrogen base (adenine and guanine) with a pyrimidine (cytosine and thymine) and this complementary pairing is not random: Adenine always pairs with Thymine through two hydrogen bridges, and Cytosine always partners with Guanina for three hydrogen bridges. Thus, the amount of adenine is always equal to that of thymine and the amount of cytosine is the same as that of guanine. However, the amount of A + T is not necessarily equal to C + G.

With this, we can say that the complementary base to thymine is adenine.

i believe it would be c: tons.

the answer is true when observing or determining population size, a direct observation is use, in which each organism is counted in a population or in an area. one benefit of this measure is that you get the exact population count but it will take a long time to  determine  the  size  of a  population.