______ is the time taken by the earth to return to a given point in its orbit with reference to a fixed star.
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Chlorophyll was first isolated and named by
Fabric made from_________ does not get wrinkled easily.
Which of the following fuels causes minimum environmental pollution?
Which of the following is the largest mammal?
Person who is colour-blind cannot distinguish between
Cannis Familiaris is the scientific name of
By which process the Chinese Scientists have cloned two identical long - tailed macaques?