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A bar graph titled Mercury Emissions by Light Source Over 5-Year Life. Mercury used in C F L is 4.0 milligrams of mercury. C F L emissions from coal power plant is 2.4 milligram of mercury. Incandescent emissions from coal power plant is 10.0 milligrams of mercury.

Based on the title of the graph, what does this graph show?
a.
a comparison of mercury emissions by light source
c.
the best energy source to use for light
b.
5-year life span of light sources
d.
5-year emissions from coal power plants



Please select the best answer from the choices provided


A
B
C
D