What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

John’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

How many bananas can you eat if your stomach is empty?

A red house is made out of red bricks. A yellow house is made out of yellow bricks. And, a blue house is made out of blue bricks. So, what is a greenhouse made of?

It is a 5 letter word if you take away first letter it is something you get from sun, if you remove second letter you will get something to eat, if you remove third letter you get a word you use in pointing at and if you remove the fourth letter you get something to drink. What is it?

John gave half of the apples he had plus one more to Jacob. He gave half of the remaining ones plus one more to James. Now, John was left with just one apple.

Can you find out how many did he have in the beginning?

You need to remove two matchsticks to make the below equation true. Can you do it ?

You have two buckets - one holds exactly 5 gallons and the other 3 gallons. How can you measure 4 gallons of water into the 5 gallon bucket?

(Assume you have an unlimited supply of water and that there are no measurement markings of any kind on the buckets.)

Imagine you are in a room with no windows or doors. How will you get out?

When 99 is considered higher than 100?