Answer:
I always follow my brother but you cannot see me, only him. You cannot hear him but you can hear me. What are we?
It happens when something has been cut with H2O.
You must keep this thing. Its loss will affect your brothers. For once yours is lost, it will soon be lost by others.
I have a hundred legs, but cannot stand. I have a long neck, but no head. I cannot see. I'm neat and tidy as can be.
What can be heard and caught but never seen?
If a rooster lays an egg on the exact peak of a barn, which side does it fall?