Environment & Ecology · Waste Management
Besides producing biogas energy, what secondary agricultural benefit is achieved by processing large-scale bio-waste and sewage material?
- 1It promotes wildlife conservation directly.
- 2It causes continuous acid rain over farmlands.
- 3It reduces the heavy metal concentration in oceans.
- 4It produces nutrient-rich manure that improves soil fertility.✓
Correct answer
It produces nutrient-rich manure that improves soil fertility.
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