What is so fragile that saying its name breaks it?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

Solve the following series:
AZ, GT, MN, __, YB

What can run but never walks, has a mouth but never talks, has a head but never weeps, has a bed but never sleeps?

Three ants are going up a hill, one behind the other. The last ant then says to the other ants, 'There is an ant behind me!'' How come?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Which is heavier: a ton of bricks or a ton of feathers?

When we see 2 but call 10?

Look at me. I can bring a smile to your face, A tear to your eye, Or even a thought to your mind. But, I can't be seen. What am I?

What do you think with the below Picture ?