What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

2 ladies and 2 girls need to cross a river in a boat big enough for 1 LADY or 2 girls. How do they do it?

If an earthquake is 1 point higher on the Richter Scale than another earthquake which is actually 10 times stronger, how much stronger would an earthquake be if it was just half a point higher on the Richter scale?

what does this below rebus represent identXQQQQQME

I add 5 to 9 and get 2. The answer is correct, so what am I?

Below is the sum of symbols in each row and column in the figure. Analyzing the figure, can you find out the value of the symbols?

What is the word or phrase?

John left on a horse on Thursday , was gone for two days, and came back on Thursday after completing his work. How did that happen?

Can you find the ages of a son, father and grandfather based on the following facts?
The sum of the ages of grandfather, father and son is 140 years.
The age of the son in months is the same as the grandfather in years.
The age of the son in days is the same as the father in weeks.

That attorney is my brother, testified the accountant.

But the attorney testified he didn't have a brother.

Who is lying?