What pattern is observed regarding sulfur dioxide

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What pattern is observed regarding sulfur dioxide concentrations?

Based on the regression line, approximately when were sulfur dioxide concentrations half of what they were in 1964?

What pattern is observed regarding particulate concentrations? Is the pattern similar to that observed with sulfur dioxide?

Does finding parallel changes in the frequency of melanic forms in both Europe and North America increase or decrease support for the claim that the changes in these frequencies are due to natural selection arising from cleaner air?

Reference no: EM132621131

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