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OSWAL PUBLICATION-DIKSHA QUESTIONS -ENVIRONMENT (VERY SHORT ANSWER)
- List two natural ecosystems.
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- Which gas is produced due to incomplete combustion of fuel?
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- Why is excessive use of CFCs a cause of concern?
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- What is 10 per cent law ?
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- What is an ecosystem ?
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- Some substances cannot be broken down in nature. What are they called?
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- What has led to formation of ozone holes?
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- A food web
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- Why is flow of energy in a food chain considered unidirectional?
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- Assertion:A network of food chain existing together in an ecosystem is...
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- Assertion : Green plants of the ecosystem are the transducers. Reaso...
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- Replacing of plastic cups by the paper cups for selling tea on train i...
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- Trophic levels are formed by
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- Gardens and cropfields are examples of
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- The contamination of air by adding gases, smoke and ash is called
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