| 21. | Composting toilets reduce water use by up to 30 %.
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| 22. | St . Mary s College is expanding its recycling and composting programs.
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| 23. | His municipal composting and recycling initiatives dramatically decreased landfill waste.
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| 24. | The oxygen feeds the aerobic bacteria and thus speeds the composting process.
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| 25. | Used coffee grounds may be used for composting or as a mulch.
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| 26. | These fields are adjacent to the landfill and composting sites.
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| 27. | Composting toilets target a certain degree of moisture in the composting chamber.
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| 28. | Composting toilets target a certain degree of moisture in the composting chamber.
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| 29. | Composting toilets greatly reduce human waste volumes through mesophilic composting.
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| 30. | Composting toilets greatly reduce human waste volumes through mesophilic composting.
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