Wind always blows from area of ________?

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The famous book; Al – Qanun was written by the Muslim scientist ?

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Television signals are converted into light signals by___________?

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It is possible to recognise a person in the dark by simply hearing his/her unique voice, it is because of ?

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Tropism mostly refers to as_______?

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When sound waves travel from air to water which of the following quantities remains unchanged?

A. Speed B. Frequency C. Intensity D. Wavelength...