Which of the following statements is not true?
A)Ozone remains a pervasive problem in the United States.
B)The United States suffers the worst air quality during winter months.
C)Since the 1980s, there has been a downward trend in ambient concentrations of sulfur dioxide, carbon monoxide, and lead in the United States.
D)Improperly dumped toxic substances can cause cancer and threaten overall health.

Question

Quizplus · Accepted Answer

The United States does not have the worst air quality during winter months. While winter air quality can be poor in some areas due to the use of wood-burning stoves and fireplaces, there are other regions where air quality is much worse during other times of the year due to factors such as wildfires or high ozone levels in the summer.

Which of the Following Statements Is Not True