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 structure of a simple

filter

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for producing clean drinking

water

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.

Overall

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,

this

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process

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can be divided into four main stages

are

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apply

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dirty

water

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is brought into the

filter

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tank

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, the

water

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passes through the

filter

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layers, through the pipes, and is brought into the final use

tank

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,

this

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process

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begins with the

process

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of impure

water

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in the

filter

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tank

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and ends with the put into final use

tank

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.

The first step is

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to collect impure

water

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into a filtering

tank

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have 3 layers of sand, charcoal, and gravel, after that,

water

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comes through 3 layers in turn, the first layer is sand, and

then

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it comes to the second layer is charcoal, to

filter

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the impure

water

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, and the

last

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layer is the gravel to finish the

process

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of filtering the impure

water

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. In the third stage, the two tanks are placed at different heights so that

fresh

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freshwater

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water

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flows slowly through the pipes, and in the final step,

water

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is fed into the drinking

water

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tank

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for supply to consumers.