How and why emissions of major pollutants have been reduced by well over 50% in the United States since 1970, despite increase in population, energy use, and economic activity. Describe at least one way you think air quality might be further improved.

we could stop use less fossil fuels

Explanation:

fossil fuels are an energy use that pollute the atmosphere

answer; new forestry

from the word list given, the most suitable words that relate to the reason information were written would be:  

objectivity: lack of bias, judgment, or prejudice

accuracy: free of mistakes, to be correct

authority: the ability to tell people what to do or believe in

content: to be satisfied  

it can be said that the author made the article to present objectivity, to provide accurate information, to be the authority in the subject that he or she writes, and to be satisfied of the information quality given out.