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MBD -HARYANA BOARD-OUR ENVIRONMENT-EXAMPLES
- What is ozone hole ? What is its significance.
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- Write the harmful effects of ozone deplection.
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- Explain global warming.
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- How is acid rain formed?
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- What is global warming?
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- List four common disposal methods?
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- Complete the sketch by labelling A,B,C,D to illustrate food web.
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- Match the following :
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- What do different countries discuss their problems based on environmen...
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- In which biogeochemical cycles do various interactions take place?
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- Which substances are called waste substances?
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- What help in digestion of food in our body?
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- Which substances are specific in their action?
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- Which man made material cannot be decomposed by bacteria and decompose...
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- Which physical conditions affect plastic?
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- What are biodegradable sub-stances?
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- Give four examples of biodegrad-able susbtances
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- What are non-biodegradabel susbtances?
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- Give two examples of non-biodegradable substances
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- Give examples of natural ecosystKHO
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