Why is a river so rich ?

You are stuck on an island where you have nothing. You find four pieces of paper somewhere on the island. What will be your strategy to escape from the island safely?

PS: No other resource is available to you on the island, neither can you build anything.

Why is 6 afraid of 7?

How can a man go eight days without sleep?

What country can make you shiver?

A bomb exploded in a room full of married couples and no one died. How?

Why is it very easy to weigh a fish?

I am a type of word that is spelt incorrectly or used differently, on purpose for humour. What am I?
Hint 1: You can find me in a joke.
Hint 2: I am a play on words.

Different lights make me strange by changing me into different sizes. What am I?

He loves to dance, twist and prance, he shakes his tail, and as a way he sails, wingless he flies into the sky. What is he?