1.Why can't we swim in the seas and rivers ?

=> Because the water in them is badly polluted

2. Is there too much smoke in the air in many cities in the world ?

=> Yes, there is.

3. What are we doing to our environment ?

=> We are destroying our envirenment by cutting too many trees, dump wastes in the seas, etc.

4. Are many areas of the earth wasteland ?

=> Yes, they are.

5. Why can't farmers in many parts of the world grow enough to eat ?

=> Because the land is polluted.

~Xin hay nhất ạ~

1. Because it so dangerous

2. Yes, there is

3. We talk to everyone to protect the environment.

3. Yes, there are 

4.Because there are not enough conditions

Xin hay nhất!!