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~