According to the passage, which of these is true about gray water systems? a) gray water systems use plants that require less water. eliminate b) gray water systems require the use of less fossil fuels. c) gray water systems reduce the amount of fresh water used. d) gray water systems reduce the amount water used by shower heads.

the answer is C) Gray water systems reduce the amount of fresh water used.

Option (C)

Explanation:

Gray water system refers to the water that is already being used in some other places such as washing machines, dish-washing, bathtubs, and showers. This water does not react with the feces, and it can be recycled and reuse for different purposes such as irrigation and toilet flushing.

As this water can be recycled and reuse, so it helps in consuming less amount of freshwater. It saves a large amount of freshwater that an individual requires every day.

thus, the correct answer is option (C).

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