A.

1. We can plant as many trees as we cut down.

2. We can have a day that is called "Plant Day." Everyone should be required to participate in it. In "Plant Day" everyone should plant a tree. (식목일)

3. We should cautious and try to not cause forest fires.

B.

1. It is important because we need oxygen to breathe and trees give out oxygen.

2. When there is a flood, the trees can help reduce the damage from the flood.

3. We get many natural resources from the trees.

... I am in sixth grade, this was what I came up with.

I hope this helped you!! :) Good luck!