What does this rebus puzzle means ?

Give it food and it will live; give it water and it will die.

A mother is 21 years older than her child. In exactly 6 years from now, the mother will be exactly 5 times as old as the child.
Where's the father?

I can sizzle like bacon,
I am made with an egg,
I have plenty of backbone, but lack a good leg,
I peel layers like onions, but still remain whole,
I can be long, like a flagpole, yet fit in a hole.

What does the following represent?

N N N N N N N

A A A A A A A

C C C C C C C

There is one thing that goes round the house and also inside the house but never even share a brief touch. What is it?

Can you identify the direction in which this bus is moving; left or right?

Hint: The bus is moving on the roads of London.

I left my campsite and hiked south for 3 miles. Then I turned east and hiked for 3 miles. I then turned north and hiked for 3 miles, at which time I came upon a bear inside my tent eating my food! What colour was the bear?

I never stop running even when I standstill. If I am formed by joining two identical bodies together, can you guess who I am?

Two boys wish to cross a river. The only way to get to the other side is by boat, but that boat can only take one boy at a time. The boat cannot return on its own, there are no ropes or similar tricks, yet both boys manage to cross using the boat.

How?