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i= gasoline containing different amounts of lead
d= the amount of pollution
Responses
i= conducting a science experiment
d= the amount of pollution
i equals conducting a science experiment d equals the amount of pollution
i= the amount of pollution
d= gasoline containing different amounts of lead
i equals the amount of pollution d equals gasoline containing different amounts of lead
i= gasoline containing different amounts of lead
d= type of car
i equals gasoline containing different amounts of lead d equals type of car
i= gasoline containing different amounts of lead
d= the amount of pollution
d= the amount of pollution