Who was the first Indian astronomer to calculate the time taken by earth to orbit the sun?
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The method of soil conservation in which bare ground between plants is covered with layer of organic matter like straw is called?
What are the main components of Bronze Alloy?
The number of neutrons in an atom is equal to the :
Weight of an object on the moon is ............ the weight of the object on earth.
The study of mountains is known as
ISRO built India's first satellite known as _____.
Research designed to evaluate theories is called
Research designed to evaluate theories is called the scientific method.
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