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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
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उत्तर
microorganisms
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संबंधित प्रश्न
Differentiate between degradable and non-degradable type of waste.
Match the items in Column I with as many times as possible in Column II.
|
Column I |
Column II |
|
1. Cow dung |
(i) Sugarcane |
|
2. Bagasse |
(ii) Raddiwalas |
|
3. Old newspapers |
(iii) Manure |
What is a landfill?
What are blue coloured bins used for?
Observe the bins and waste material heaps and suggest what materials can be used for preparing handicrafts materials.
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
To what use can you put the following kind of garbage and how?
Rotting smelly garbage
What happens when cooking medium is made to flow down a drain?
Which of the following features relates to biodegradable substances?
Give two examples of Non-biodegradable wastes.
