A bar graph that shows the number of PM (PM) in the United States from 1994 to 2010. The x-axis represents the years, starting from 1994 and ending in 2010, with the y-axis representing the percentage of PM. The graph is divided into three sections, each representing a different year. The first section is red, the second section is blue, and the third section is yellow. The red section is gray, the blue section is orange, the yellow section is green, the orange section is purple, and it is blue. The yellow section has a yellow triangle on the right side, which represents the Sulfur (Sulfur) and the green section has an orange triangle. The graph shows that the PM has increased from 0.0% to 0.01% in the first quarter of the year, with a slight increase in the percentage in the second quarter and a slight decrease in the third quarter. - The graph also has a legend at the bottom that explains the meaning of the colors used in the graph.

User msotlas uploaded the image

Line Point Font Angle Brand - Environmental Protection Day PNG

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