What will you do if the water was pollution?  
      - Conserve water by turning off the tap when running water is not necessary. This helps prevent water shortages and reduces the amount of contaminated water that needs treatment.

     - Be careful about what you throw down your sink or toilet. Don’t throw paints, oils or other forms of litter down the drain. Use environmentally household products, such as washing powder, household cleaning agents and toiletries.

     - Take great care not to overuse pesticides and fertilisers. This will prevent runoffs of the material into nearby water sources.

     - By having more plants in your garden you are preventing fertiliser, pesticides and contaminated water from running off into nearby water sources.

     - Don’t throw litter into rivers, lakes or oceans. Help clean up any litter you see on beaches or in rivers and lakes, make sure it is safe to collect the litter and put it in a nearby dustbin.

What will you do if the air was pollution ?  
     - Riding a bike or walking instead of driving.

     - Taking a bus or carpooling.

     - Buying a car that has greater fuel efficiency. 
     - Turning off lights and appliances when they are not in use.

     - Using energy efficient light bulbs and appliances.

     - Buying fewer things that are manufactured using fossil fuels.

1, Wastewater treatment properly Wastewater treatment properly Industrial wastewater treatment Law and policy against water pollution Individual efforts and educational campaigns 2, Use eco-friendly products that do not waste electricity and emit harmful gases to prevent the atmosphere from being contaminated with these substances. People should minimize the use of fuel burned from coal, kerosene by using electricity, solar energy, wind energy to reduce air pollution. People should travel by public transport such as buses, electric cars to reduce congestion and reduce the density of smoke caused by the burning process of gasoline. When stopping the red light, turn off the motorcycle to help reduce the amount of smoke emitted into the atmosphere. Plant a lot of trees, creating a large green area in the city, streets with lots of traffic, places where congestion often occurs.