___ is a chemical added to water in a water treatment plant to kill th

1.	___ is a chemical added to water in a water treatment plant to kill the germs present in it.10.A harmful substances present in land, water, air that pollutes is called a ____ 3Microorganisms present in the polluted water use up the ______ present in it. 7. ____ damages the ozone layer. pls answer i will mark them as brainliest
Answer» ANSWER: CHLORINE, don't KNOW, OXYGEN, OZONE

_ is a chemical added to water in a water treatment plant to kill the germs present in it.10.A harmful substances present in land, water, air that pollutes is called a 3Microorganisms present in the polluted water use up the present in it. 7. damages the ozone layer. pls answer i will mark them as brainliest

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