Recent questions without answers

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What is deoxygenated blood.

asked Jan 24, 2019 in Science by danish (1.0m points)

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Define respiration

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How long does a cell live

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How is brain protected.

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What are the functions of cerebrum?

asked Jan 23, 2019 in Science by danish (1.0m points)

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Why plants are called autotrophs?

asked Jan 23, 2019 in Science by danish (1.0m points)

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How does nervous system work?

asked Jan 23, 2019 in Science by danish (1.0m points)

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What is meant by precipitation?

asked Jan 23, 2019 in Science by danish (1.0m points)

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Write the working of pin hole camera

asked Jan 22, 2019 in Science by danish (1.0m points)

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The Earth's magnetic field is invisible.How we can see its evidence?

asked Jan 22, 2019 in Science by danish (1.0m points)

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What are bioluminescent?

asked Jan 22, 2019 in Science by danish (1.0m points)

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Do you know why the sole of your shoe have uneven patterns?

asked Jan 22, 2019 in Science by danish (1.0m points)

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Name some man made sources to produce light.