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प्रश्न
The question has four options. Choose the correct answer:
Continuous sewage flow into a stream would lead to
पर्याय
eutrophication
algal bloom
depletion of oxygen
increase in temperature
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उत्तर
eutrophication
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संबंधित प्रश्न
List some of the common wastes produced in mining operation and mention how these can be reused.
Discuss:
Is it possible to reduce the problems relating to disposal of garbage?
Which of the following is biodegradable waste?
Differentiate between biodegradable and non-biodegradable substances. Cite examples.
Which of the following activities does not reflect responsible behaviour with regard to waste disposal?
Put a tick (√) against the garbage items given in Table 16.1 which could be converted into manure. Put a cross (×) against the others.
| Garbage Items | Make manure or not | |
| (i) | Egg shells | |
| (ii) | Straw | |
| (iii) | Dry flowers | |
| (iv) | Pebbles | |
| (v) | Broken pieces of glass | |
| (vi) | Nails and screws | |
| (vii) | Plastic bangles | |
| (viii) | Left over food | |
| (ix) | Steel broken vessel | |
| (x) | Dead animals |
Write 3 sentences on what comes to your mind when you chance to see the following.
A cow eating a polythene bag.
"The change in packaging has resulted in waste becoming non-biodegradable." Giving two examples from daily life, justify this statement.
