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introduced sewage in water systems
a.
decreases levels of phosphorus and nitrogen
b.
increases oxygen levels
c.
increases concentrations of solids
d.
leads to decreases in the temperature

c. increases concentrations of solids

Sewage is a type of wastewater that is produced by the community of the human population. It consists of fecal and urine matter, vegetable and other wastewater produced due to human activity like washing of cloths, bathing. The wastewater contains solid biological wastes which needs to be decomposed by the bacteria and other microbes. The addition of the sewage water to the water systems will contaminate the water and will increase the solid content of the water.

The correct answer is option C, increases concentrations of solids

Explanation:

Addition of sewerage to water system increases the mass of the solid in the system. A sewerage primarily consists of faecal waste, toilet waste (hair, soaps, detergents etc,) and in many cases it also consists of debris that has flown into the sewerage as of the surface runoff during rains etc. All these solid waste get introduced in the water system, when sewerage is introduced in it . Addition of waste decreases the oxygen level, causes temperature increase and also increases the levels of phosphorus and nitrogen

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