Question

The EPA sets national air-quality standards for common air pollutants. The
graph shows the change in the concentrations of these pollutants over time.
Which conclusion do the data in the graph support?

A Concentrations of all pollutants have decreased.
B. Monitoring concentrations of pollutants is too expensive.
O C. Concentrations of all pollutants have increased.
O D. Monitoring concentrations of pollutants has been ineffective.

Answer 1

Answer:

A

Explanation:

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Answer 2

The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

What is the EPA?

The EPA is the environmental protection agency which takes care of the set limits of pollutamts that are released into the environment. The chart shows the monitoring of the concentrations of pollutants over a period of time.

We can see tat the chart is so irregular. The irregularity of the chart means that, monitoring concentrations of pollutants has been ineffective.

Learn more about EPA: https://brainly.com/question/365923