Multiple choice

Which of the following methods can be effective for controlling pollution?

  1. Sewage treatment

  2. Control of soil pollution

  3. Installation of tall chimneys with filters

  4. All of the above

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Sewage treatment, soil pollution control, and the use of filters in chimneys are all standard and effective methods for mitigating various types of environmental pollution.