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. Define pollutants?

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Why clear water is not necessarily safe to drink?

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What is meant by drought?

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How many are the parts of an ecosystem? Name

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What is meant by reduce, refuse and recycling?

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How a chemical formula of a molecule is denoted?

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Describe uses of water.

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How did Babar conquer Chanderi?

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Explain aquatic habitates?

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Suggest different ways to clean impure water ?

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Describe two food chains in the enviroment around them?

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Write an activity to show reactions of marble with bleach.

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What is meant by hypertension?

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Explain how water is the most essential part of life.

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What are the main parts of respiratory system?

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How cross pollination take place?

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What is asexual reproduction?

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How pollination is done by wind?

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Why is the most of earth's water salty?

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What do you know about Tuzak-e-Jahangiri?

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