What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

A Doctor always sneezes before the rain. Doctor sneezes, Will it rain?

I am the beginning of the end, and the end of time and space. I am essential to creation, and I surround every place. What am I?

You are a prisoner sentenced to death. The Emperor offers you a chance to live by playing a simple game. He gives you 50 black marbles, 50 white marbles, and 2 empty bowls. He then says, 'Divide these 100 marbles into these 2 bowls. You can divide them any way you like as long as you use all the marbles. Then I will blindfold you and mix the bowls around. You then can choose one bowl and remove ONE marble. If the marble is WHITE you will live, but if the marble is BLACK... you will die.'

How do you divide the marbles up so that you have the greatest probability of choosing a WHITE marble?

What does below Rebus say?

XLR8

What does this rebus riddle means ?

A man was driving a black truck. His lights were not on. The moon was not out. A lady was crossing the street. How did the man see her?

When my father was 31 I was 8. Now he is twice as old as me. How old am I?

On my way to St. Ives I saw a man with 7 wives. Each wife had 7 sacks. Each sack had 7 cats. Each cat had 7 kittens. Kittens, cats, sacks, wives. How many were going to St. Ives?

Solve the following series:
AZ, GT, MN, __, YB