1. If the land is polluted , the farmers will be unable to grow scops.
2. If people build too many telephone poles and overhead power lines, there will be visual pollution.
3. If people use contaminated water of cooking, their health will be badly affected.
4. If we place dustbins in many places, people won't throw rubbish everywhere.
5. If the factory installs a new filtration system , the industrial waste will be well - treated.
