Botany - Environmental Issues Question with Solution | TestHub
BotanyEnvironmental IssuesPollutionEasy2 minPYQ_2020
BotanyEasysingle choice
Choose the correct representation of effect of sewage discharge on important characteristics of a river.
Options:
Answer:
A
Solution:
When sewage is discharged in the river, the dissolved oxygen decreases and the biological oxygen demand BOD increases. Microbes that cause break down of organic matter consume a lot of oxygen. This causes a deficiency of oxygen for fishes and other aquatic organisms leading to their death.
Stream:NTA_ABHYAS_NEETSubject:BotanyTopic:Environmental IssuesSubtopic:Pollution
⏱ 2mℹ️ Source: PYQ_2020
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