1. We can't swim in the seas and rivers because they are too dirty.
2. Yes, there is too much smoke in the air in many cities in the world.
3. We are destroying our environment by cutting down too many trees, burning forests, and causing harm to plants and animals.
4. Farmers in many parts of the world can't grow enough to eat because of the damage to the earth's resources and pollution.
5. To save the earth, we need to take actions such as reducing pollution, conserving resources, planting more trees, and promoting sustainable practices in agriculture and industry.

 

1:because they are too dirty to swim in
2:yes, there is