Write 1 activity to explain one heating and magnetic effect of electricity.
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Sludge is the human waste that is present in the waste water which is left during the sewage treatment. It is used in the production of biogas and manure. This is because it is an organic waste. Treatment: Sludge is collected and decompSludge is the human waste that is present in the waste water which is left during the sewage treatment. It is used in the production of biogas and manure. This is because it is an organic waste. Treatment: Sludge is collected and decomposed using an anaerobic bacterium.osed using an anaerobic bacterium.
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