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Why do amphibians lay a large number of eggs.

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How long embryo inside a chicken's egg take to hatch

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What is a screw? Give example.

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Give three exapmles where wheel and axle are used in our daily life.

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What is noise?

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Why do we need carbohydrates

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Describe the revolution of earth

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What is balanced diet and write its importance.

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What is an inclined plane?Give three examples where inclined plane is used in our daily life.

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Why plants are called producers?

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What are simple plants? Give examples.

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Into how many states matter exists?

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What are warm blooded animals.

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Write the basic principles of hygiene.

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Write different methods to separate insoluble solids from water.

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Why do living things need food?

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What is the role of albumen or egg white in an egg

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Write three names of the body parts and describe their functions

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What are the scales of temperature?

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Define solution.

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