The diagram below shows how a simple water filter is constructed and how it functions to produce clean drinking water. Summarize the information by selecting and reporting the main features, and make comparisons where relevant.

The diagram illustrates the process of

water

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filtration

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, whereby dirty

water

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is transformed into drinking

water

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.

Overall

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, the steps are quite straightforward, beginning with the drainage of unclear

water

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into various

filtration

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materials.

First,

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a pipe connected to a

storage

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tank

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is placed at the bottom of the

tank

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to convey the liquids.

Next,

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the first layer of

filtration

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material, gravel, is poured into the container. After that, charcoal and sand are added to the

tank

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. The ratio of sand to gravel is equal,

while

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charcoal is present in a lesser quantity (2:2:1).

Subsequently

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, a jar of impure

water

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is poured into the

filtration

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tank

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. Before the

storage

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tank

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can be used, it is important to connect the hose between the drainage and the

storage

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tank

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. After that, check the quality of the

storage

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container, ensuring that the tap is turned off and the cover is placed correctly.

Finally

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, the

tank

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will store clear and hygienic

water

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that is

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ready for use in drinking or cooking.