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 construction and working process of a simple

water

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filtration

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system used to convert impure

water

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into clean drinking

water

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.

Overall

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, the system consists of two main containers connected with a pipe, with the first

containers

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container

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serving as the

filtration

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unit and the second as a shortage tank for clean

water

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. The

filtration

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process involves three layers of materials: sand, charcoal and gravel. The process begins with impure

water

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being poured into the first container, which acts as a

filtration

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unit. During the stage,

water

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passes through the layers, with large debris being trapped in the gravel, followed by smaller particles being trapped in the sand, and some contaminants being absorbed by the charcoal. Once filtered, the

water

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travels through a hose or pipe connected to the lower part of the

filtration

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container and enters a second tank, which serves as a shortage unit for clean drinking

water

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. The container is equipped with a tap for easy access.