Good Riddles

Question: What do these things all have in common: Laughter, living well, and a good offense?

Question: What is the Capitol of Las Vegas

Question: Two penguins are in a canoe, in the middle of the dessert, with paddles. They are rowing when the first penguin turns to the 2nd penguin & asks WHERE IS your paddle? The 2nd penguin responds, "yup sure does". Why did the 2nd penguin respond this way?

Question: A man is stuck on an island with his best friend and a fisherman. The fisherman and his best friend go off to catch food while he builds a hut. The fisherman returns alone with some salmon he had prepared. His best friend had fallen off a cliff.

After he is rescued from the man goes to a diner and he orders salmon. He eats his meal, he pulls out a gun and commits suicide. Why does he do this?

Question: I have roots that nobody sees,
I'm taller than any trees,
up and up I go,
but I never grow?

What am I?