What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

What does the rebus below mean?

TEN BADTION

What is the word or phrase below?
R | E | A | D

Twenty frogs are sitting on a log floating on the surface of a river. Two of them decide to jump off into the water.

How many frogs are there on the log at this moment?

What is the largest amount of money that you can possess in change and still if someone asks you for a dollar, you won't be able to give?

What is the difference between a jeweller and a jailer?

You are trapped in a room with two doors. One leads to certain death and the other leads to freedom. You don't know which is which.
There are two robots guarding the doors. They will let you choose one door but upon doing so you must go through it.
You can, however, ask one robot one question. The problem is one robot always tells the truth, the other always lies and you don't know which is which.
What is the question you ask?

Four cars come to a four-way stop, each coming from a different direction. They can’t decide who got there first, so they all go forward at the same time. All 4 cars go, but none crash into each other. How is this possible?

I’m tall when I’m young, and I’m short when I’m old. What am I?

John was drowned by he was not wet. How?