CBSE Class 7 Answered
why is it necessary to treat sewage before disposing it off in a water body?
Asked by gspublicschool | 01 Mar, 2019, 10:13: AM
Expert Answer
Sewage water contains harmful substances. It is a complex mixture containing suspended solids, organic and inorganic impurities, nutrients, saprotrophic and disease-causing bacteria, and other microbes. So, when sewage is discharged untreated into rivers or seas, it becomes dangerous for aquatic plants and animals. Therefore, it is necessary to treat sewage before disposing it off in a water body as it can cause harm to human and aquatic life.
Answered by Sheetal Kolte | 01 Mar, 2019, 11:28: AM
Concept Videos
CBSE 7 - Science
Asked by jasvirbhaini8872 | 12 Jan, 2021, 02:51: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by dediramshiya | 20 Feb, 2020, 11:54: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by deeparathee35 | 18 Feb, 2020, 08:21: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by geeta2606 | 21 May, 2019, 12:23: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 12 Mar, 2019, 08:35: AM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 11 Mar, 2019, 08:55: AM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 06 Mar, 2019, 10:29: AM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 05 Mar, 2019, 12:56: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 05 Mar, 2019, 12:52: PM
ANSWERED BY EXPERTCBSE 7 - Science
Asked by gspublicschool | 01 Mar, 2019, 10:13: AM
ANSWERED BY EXPERT
