Why Wine Glass Stem is so long?

A sea diver is a real show-off. He showed everyone that he can hold his breath underwater for 15 minutes.

I went to the diver and told him that I can be underwater for double the time i.e 30 minutes.
He responded that he will give me 100$ if I would be able to do it. I won 100$.

What did I do?

Can you name an animal whose killing cannot be performed without spilling your own blood?

When can we add 2 to 11 and get 1 as the correct answer?

Decode this picture on T-Shirt and tell what it says ?

Can you make a six-letter word using the letters N, A and B ?

How is the moon similar to a dollar?

Can you start the fire using two pieces of wood?

How can you make a TV, a bed, a dog, and a car liquid?

If it took eight men ten hours to build a wall, how long would it take four men to build it?