What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

Always in you, Sometimes on you;

If I surround you, I can kill you.

What am I?

How can you write nineteen in a manner that if we take out one, it becomes twenty?

I am working in a bus company. The company recently went under expansion and therefore there was not enough room for all the buses. As a result, twelve buses had to be stored outside.

If the company decides to expand the garage space by forty percent, enough space to accommodate the current buses will be created leaving enough space for twelve more buses if the need arises in future.

Can you calculate the number of buses that the company owns at present?

What part of Turkey has the most feathers?

A mile-long train is moving at sixty miles an hour when it reaches a mile-long tunnel. How long does it take the entire train to pass through the tunnel?

Who is generally closer to the kids, mom or dad?

(it's a funny riddle)

Can you divide numbers from 1 to 9 (1 2 3 4 5 6 7 8 9) into two groups so that the sum of the numbers of each group is equal?

Note: 9 cannot be turned over to make it 6.

What is the centre of gravity?

Two girls were born to the same mother, on the same day, at the same time, in the same month and year and yet they're not twins. How can this be ?