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A water purifier helps to clean water and make it safe for us.It removes germs, bad smell, and unwanted particles from the water can protect us from diseases such as diarrhea, cholera, and typhoid. 

We want to prepare water purifier, we need to collect

1.one empty plastic bottle

2.cardboard 

3.charcoal

4.gravel

5.sand

6.hot glue

7.cotton

8. coconut fiber

Now we do method of purifier, first we cut cardboard like square then we cut the plastic bottle on the bottom then we stick on the cardboard with hot glue. Now we put all the parts of we collect. First we put cotton and cotton on the top we put charcoal after that we put cotton and on the top we put gravel after that we put cotton and on the top we put coconut fiber after that we put cotton and on the top we put sand and on the top of sand we put cotton. After that we collect dirty water than pour on the bottle then we see clean water came out it's mind we are success in our project.