We use the to let citizens know pollution levels and health risks each day.

Question 1 options:

Pollution Index

Particulate Index

Cheese Index

Air Quality Index

Question 2 (1 point)
Once the clean air act was passed in the United States, the level of pollution from power plants .

Question 2 options:

Went up (increased)

Went down (decreased)

Stayed the same as before

Question 3 (1 point)
True or False: Air quality is never bad in rural areas, outside of cities.

Question 3 options:

False

True

Question 4 (1 point)
Which of the following is a natural source of air pollution?

Question 4 options:

Cars

Power Plants

Earthquakes

Forest fires