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What do you know about wind?

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How would air compositio change if there were no plants?

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What are abiotic components of environment?Explain.

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Explain why air is considered as a mixture of gases

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How cake become fluffy?

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Potential energy changes into kinetic energy when a diver dives.

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Compare the speed of sound in solids, liquids and gaseous mediums.

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Write down some plant tissues.

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Describe various techniques to separate mixtures.

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Can the components of a mixture be easily seprated?

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What happens when a comet comes near the sun?

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Differntiate between parasite and host?

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Describe the uses of compounds and mixtures?

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Explain the properties and uses of metals?

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Define reflection?

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Investigate the image formation by convex and concave mirrors?

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Which gas is the major part of air?

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Which planets have their own satellites?

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What do you know about pupil?

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What is meant by the word "Photosynthesis" ?

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