What is smog also known as?

Related questions

• How do water treatment plants neutralize acid rain?
• What are water, air, and soil pollution?
• What are different types of pollution and their impacts?
• What are three sources of groundwater pollution and how do pollutants get into the water?
• What type of Ozone is a major component of smog?
• What is thermal pollution?
• How does importing coal contribute to pollution?
• What are some human activities that result in pollution?
• Where on earth is there a lot of light pollution?
• What is toxic pollution?