Answer:
it is that worker bee's work for the queen bee because the queen bee is really old while the worker bee's are young
Explanation:
In DNA, thymine binds to adenine, and cytosine binds to guanine. This means that there is an equal amount of thymine and adenine, and there is an equal amount of cytosine and guanine.
If there is 15% thymine, there should be 15% adenine.
Note that in real life, the percentage of bases won't be 100% equal.
The answer is: Molecule and Organ system. Hope this helps!