youre voice
You should be able to hear this as good at night as any other time. There are fewer planes in the air at certain times and night time is one of them.
well that's not a question its a statement so i see the situation here.....you have a question mark (?) where a period(.) should be.
Dogs, whales, bats,
Yes
Sound is longitudinal waves that you can hear. http://en.wikipedia.org/wiki/Longitudinal_wave