Using Only Five 5's and any mathematical operator make sum as 37

What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

It can't be seen, can't be felt, can't be heard, and can't be smelt.
It lies behind stars and under hills, And empty holes it fills.
It comes first and follows after, Ends life, and kills laughter.
What is it?

How can you tell a raw egg from a hard-boiled egg?

John was driving a bus and got stuck when passing through an underpass. Then came Jacob with a needle and got the bus out of the underpass.

What did the boy do?

Find the Goldfish below the given Image.

A word I know has six letters it contains, remove one letter and 12 remain. What is it?

13 decks of cards have been mixed. What is the minimum number of cards that must be taken out from the above-mixed cards to guarantee at least one 'four of a kind?

I know there are two methods by using three time the same number with a plus(+) operator , you can make sum as 60.

One of them is 20+20+20.

whats the other way ?

What does below rebus means ?