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The first step in treating water from a river or lake is usually
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
The pH of water is a measure of its
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
Hard water contains high levels of
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
The amount of one substance in a certain volume of another substance is its
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
Why is chlorine added to drinking water?
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
What enables water to move through a system of pipes?
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
Household wastewater and the wastes in it are called
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
Which of the following is a way to conserve water?
calcium and magnesium
chlorine kills disease-causing microorganisms
reusing water in a factory to cool hot machinery
acidity
water pressure
sewage
concentration
filtration
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