An atom is a particle with a neutral charge
The frequency is exactly the rate at which the bug beats its wings.
If that "600" that you mentioned is 600 beats per second, then
THAT's the frequency . . . 600 per second. (600 Hz)
Answer:
The answer is a," their receptors are sensitive to chemical molecules."
I'm in middle school, but I think I know the answer, I am sorry if I am wrong.
It's D