What are the specialities of bio-digester tanks in the train toilets?
A
They are small scale waste collection tanks.
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B
They produce minimal waste.
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C
They do not release waste on the track.
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D
They release bio-digested waste on tracks.
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Solution
The correct options are A They are small scale waste collection tanks. B They produce minimal waste. C They do not release waste on the track. Bio-digester tanks are small sacle waste collection tanks below the train toilet seats. They produce minimal waste and do not release waste on the the railway tracks.