PLS HELP ASAP Course Activity: Pollution in the Fluid Subsystems
Part A
Conduct an internet search and look for information about both indoor and outdoor air pollution. Focus on the three topics:

What is indoor or outdoor pollution?
Why is indoor or outdoor pollution a concern?
What pollutants are of greatest concern and who is at risk?
In the answer space, write a paragraph about one environmental or health hazard that surprised you. Which pollutants are responsible for the hazard?

Part B
The EPA examines six air pollutants to assess air quality. These pollutants are listed in the table. To learn more about them, conduct research using the search term "EPA six common air pollutants." Use your research to fill in the table.

In 1970, the US Congress passed the Clean Air Act to combat increasing levels of harmful pollution in the atmosphere. The law was amended in 1977 and 1990 to make major improvements. Read a brief summary about the Clean Air Act. Then read about how our nation's air status and trends have changed since this law was passed. As you’re reading and scrolling through the nation’s air quality trends, list three positive or negative outcomes of the Clean Air Act.

Part D
This image from the EPA shows the projected benefits and costs from the most recent amendments to the Clean Air Act. A net improvement in economic welfare is projected because cleaner air leads to better health and productivity for American workers. It also reduces medical expenses for air pollution-related health problems.

alternative pie chart showing comparison of benefits and costs of Clean Air Act Amendment programs

Based on your findings in parts A to C, write a summary paragraph evaluating the Clean Air Act in terms of cost and effectiveness. Cite evidence for your reasoning.