class - 7 science
waste water story
ans these questions ::
• Name the constituents of sewage water.
• Explain the process of treating waste water.
Answers
Answered by
1
Answer:
a) 1. organic impurities
2. inorganic impurities
3. disease causing microbes
4. nutrients
b). 1. biological filter systems
2. composting toilet
3. septic tanks
Answered by
1
Answer:
organic impurities
inorganic impurities
disease causing microbes
nutrients
Explanation:
kya tum meri gf banogi
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