How did Dr. John Snow's findings influence the need for clean water?
His findings caused chang...
How did Dr. John Snow's findings influence the need for clean water?
His findings caused changes to water pollution standards.
His findings influenced the treatment of water runoff.
His findings caused changes in waste and water treatment.
His findings led to the creation of the Environmental Protection Agency.
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Tom wants to conduct a scientific study but he needs to finish by the end of the school year. what practical way could tom work around this limitation and be successful in his study?
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