What does below rebus means ?

I am five letter word that is under you.
If you remove my 1st letter, then I am over you.
If you remove my 1st and 2nd letters then I am all around you.

Who am I?

A bank customer had $100 in his account. He then made 6 withdrawals. He kept a record of these withdrawals, and the balance remaining in the account, as follows:

Withdrawals Balance left
$50 $50
$25 $25
$10 $15
$8 $7
$5 $2
$2 $0
----- -----
$100 $99

Why are the Totals not tallying?

Which Travels Faster? Solve below famous picture riddle:

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

Why did the Girl throw the butter out of the window?

I cannot talk, but I always reply when spoken to. What am I?

What can you hold in your right hand, but never in your left hand?

what does this picture(rebus) riddle means ?

What type of tree can I carry in my hand?