What does below science rebus mean?

Ag Ag Ag
Ag SPOON Ag
Ag Ag Ag

There are 2 people near the river and both of them want to get on the other side. The boat can only take one of them. But they got across.
How?

I don't get anymore wetter, no matter how much rain falls on me.

Forwards I am heavy, backward I am not. What am I?

Find the next number in the series?
2, 12, 36, 80, 150, 252, 392, _ ?

I am a five-letter word under you,
Remove the first letter and I am above you,
Remove the second as well and I am around you.

Who am I?

You along with your friend are standing in front of two houses. Each of those houses inhabits a family with two children.

Your friend tells you the below two facts:
1) On your left is a family that has a boy who likes accounts but the other child loves science.
2) On the right is a family with a seven-year-old boy and a newborn baby.

You ask him, "Does either of the family have a girl?"

To this, he replies, "I am not quite sure. But can you guess that? If you are right, I will give you $500."

Which family do you think is likely to have a girl?

The Puzzle: Here is a famous prize problem that Sam Loyd issued in 1882, offering $1000 as a prize for the best answer showing how to arrange the seven figures and the eight 'dots' .4.5.6.7.8.9.0. which would add up to 82

I have an eye but still cannot see.

Who am I?

In the given figure, move three matchsticks so that the resulting figure contains two rectangles.