Environmental Issues

Bihar Board Class 12 · Biology · 33 past questions

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1. Q25 2017

   World Environment day is celebrated on-

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2. Q26 2017

   Population explosion results in-

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3. Q27 2017

   The safe noise level fixed by WHO is-

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4. Q28 2017

   What is global warming? Explain its effect and ways to overcome it.

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5. Q29 2017

   What is Ozone layer? Write its effects on atmosphere.

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