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Construct a food chain with three links?

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Draw the atomic structure of the following element: (a) Magnesium, (b) Fluorine.

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What is meant by reduce, refuse and recycling?

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What are the characteristics of pure water?

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Define freezing and boiling points of water?

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Why clear water is not necessarily safe to drink?

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How fertilizers cause water pollution?

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How a chemical formula of a molecule is denoted?

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How we can purify water by chlorination?

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Explain the law of constant composition?

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Explain " Surface water "?

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Write an activity to calculate the number of protons, electrons and neutrons in a sodium atom

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How protons, elctrons and neutrons are alike and different?

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Explain the water beneath the surface of Earth?

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Describe two food chains in the enviroment around them?

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Explain water distillation ?

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Discuss the importance of isotopes in the field of medicines and agriculture?

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Explain how water is the most essential part of life.

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State criss cross method in detail?

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What is meant by consumers? Explain the types of consumers.

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