Answer:
The topic of the graph is "The Most Polluted Cities in America."
The x-axis represents the cities with the highest year-round levels of particle pollution in the U.S. from 2017 to 2019. The cities listed on the x-axis are Bakersfield, CA; Fresno-Madera-Hanford, CA; Visalia, CA; Los Angeles-Long Beach, CA; Medford-Grants Pass, OR; Fairbanks, AK; San Jose-San Francisco-Oakland, CA; and Phoenix-Mesa, AZ.
The y-axis represents the National Ambient Air Quality Standard for PM2.5, a measure of fine particles directly emitted from combustion sources. The values on the y-axis indicate the concentration of PM2.5 in micro-grams per cubic meter.
Based on the graph, some observations that can be made are:
1. Bakersfield, CA has the highest level of particle pollution, followed closely by Fresno-Madera-Hanford, CA and Visalia, CA.
2. The cities with the lowest levels of particle pollution are San Jose-San Francisco-Oakland, CA and Phoenix-Mesa, AZ.
3. Fairbanks, AK has a significantly higher level of particle pollution compared to other cities on the graph.
4. The National Ambient Air Quality Standard for PM2.5 is indicated by a score of 12.1 or higher. All the cities listed on the graph have PM2.5 concentrations exceeding this standard.
Based on these observations, it is concerning that several cities in California, as well as Fairbanks, AK, have high levels of particle pollution. This suggests a need for measures to improve air quality in these areas.
As for what could happen in the next 10 years, it is difficult to predict with certainty. However, it is possible that continued efforts to reduce pollution from combustion sources and implement air quality regulations could lead to improvements in the air quality of these cities.
