What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

I am under you when I am whole.
I shift above you if you remove the first letter.
I come all around you if you remove the second as well.

Can you tell me who I am?

What number does the below three word/phrase identify and why?
1. Deck
2. Year
3. Singing in the Rain

You have to put a letter on the following to make it a meaningful word. The only challenge is that you can't use 'E'.

S E Q U E N C _

Prove that twice of ten is the same as twice of eleven.

What's the best place to go shopping in the ocean?

Be active and find the killer in the picture Riddle below.

I was born in a small house and I live in it all alone. No windows and no doors have been assigned to my house. The only way I can go out is by breaking through the walls of my house.

Who am I?

A man wants to cross the pit of fire which is 25 feet in length and he has 2 planks(fire resistant) 19 feet in length. How can he cross the pit of fire alive?

When we see 2 but call 10?