Learning Outcomes

When you have studied this session, you should be able to:

  • Define and use correctly all of the key words printed in bold.
  • Describe the different types of water pollutants. 
  • Explain the possible ways in which water can be polluted.
  • Describe measures that can be adopted for protecting water sources from pollution.

آخری ترمیم: منگل, 2 اگست 2016, 1:47 ص