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प्रश्न
The question has four options. Choose the correct answer:
Sewage water is purified by
पर्याय
microorganisms
light
fishes
aquatic plants
उत्तर
microorganisms
APPEARS IN
संबंधित प्रश्न
What is sewage? How is sewage disposed of?
Why is e-waste harmful? Express your opinion about this.
List some of the common wastes produced in mining operation and mention how these can be reused.
What is a landfill?
Beera, a farmer would clear his field every day, and burn dry leaves fallen on the ground. After some time he found that those living in huts near his field were suffering from cough and breathing problems.
(i) Can you explain why?
(ii) Also suggest an environment-friendly way to dispose of the dry leaves.
"The change in packaging has resulted in waste becoming non-biodegradable." Giving two examples from daily life, justify this statement.
Some wastes are given below:
- Garden waste
- Ball point pen refills
- Empty medicine bottles made of glass
- Peels of fruits and vegetables
- Old cotton shirt
The non-biodegradable wastes among these are ______.
Define the following term:
Pollution
Distinguish between the following pair:
Biodegradable and Non-biodegradable waste.
