I think that this can be answered in multiple ways because there is not a right answer to this specific question. But I think that some characteristics is that they have be industrial, because if a place can not produce then it can not stand, and I also think that it is defined by how much power the city has economically and physically producing.
Hi there,
They are estrogen, progesterone, and testosterone. Estrogen is the main female hormone. Testosterone is the main male hormone. Progesterone is another female hormone related to childbirth, pregnancy, and periods. Insulin has nothing to do with reproduction. It helps your body use sugar. ATP isn't a hormone. It's energy :)
I hope I helped :)
Answer:
the desk is the answer because the sound wave is propagating through the solid bench.