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2. What is sewage? Explain why it is harmful to discharge untreated sewage into rivers or seaAns. Sewage is wastewater released by homes, industries hospitals, offices and other users. It also inheon rain The water that washes off roads an |
| Answer» <p>Sewage is the wastewater containing both liquid and solid wastes produced by humanactivities from homes, industries, hospitals, offices, etc.Sewage contains various contaminants including disease-causing bacteria and othermicrobes. If untreated sewage is discharged into rivers or seas, then the water in therivers or seas would also get contaminated. If this contaminated water is used fordrinking, then it can cause diseases such as cholera, typhoid, dysentery, etc. which maylead to death. That is why it is harmful to discharge untreated sewage into rivers orseas.</p> | |