Question

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Answer 1

Answer 1:

When sunlight enters the earth's atmosphere, then it continuously goes from rarer to the denser medium therefore, refraction of light takes place. The refraction of light taking place in the atmosphere is known as Atmospheric Refraction.

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Answer 2:

The reaction is a Combination Reaction.

And when Calcium oxide reacts with water to from slaked lime, a huge amount of heat(energy) is released, so the answer is (4) Exothermic reaction.

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Answer 3:

The testes produce the male sex hormone—

testosterone.

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Hope it helps Dear! :)