Recycling refers to the process of treating used or waste materials to enable their reuse for new products.

Recycled Water

 Recycled Water refers to wastewater that is treated to enable its reuse.

Rapid Population Growth

Rapid population growth on earth (which has been uneven geographically) has resulted in strains on environmental resources such as water and food.


Plastic refers to synthetic or semi-synthetic material made from a range of organic compounds that is reshapable by applying heat and pressure.

Fossil Fuel

Fossil Fuel refers to combustible organic material such as coal, oil, or natural gas that is formed from the remains of living organisms.