Answer:
A man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?
The more of it there is, the less you see.
What goes up when the rain comes down?
I am whole but incomplete. I have no eyes, yet I see. You can see, and see right through me. My largest part is one fourth of what I once was.
I am always in front of you, but you will never see me. What am I?
I have two eyes in the front and a lot of eyes on my tail