Environmental pollution

3. An air pollutant that is the main source of greenhouse gases
7. layer This layer is located in the stratosphere and protect us from UV solar rays
8. A chemical pollutant used in agriculture to end the plages
10. A physical pollutant that affects soil
12. dioxide a chemical air pollutant that produces acid rain in contact with water
14. spill This is a common accident from oil companies
16. metals This is an important water pollutant from industries. It may contain, mercury,iron,lead
17. change This is a general problem due to the increment of greenhouse gases
18. It is a secondary pollutant of the air. It is the product of a reaction
19. Its a biological pollutant mostly present in the hospitals

1. It is important for agricultural but in excess can be a dangerous soil pollutant
2. This is a property of a sustance that causes cancer
4. A characteristic of a harmful substance
5. a chemical artificial pollutant commonly used at home
6. fuels The combustion of these fuels produces greenhouse gases
9. The action of developing activities to restore and renovate the environment
11. Biological water pollutant from hospitals
13. Virus and bacteria can be classified as
15. A chemical pollutant usually obtained from textile industry
17. These chemical pollutants are the cause of the deterioration of ozone layer