What is special about a sword-billed hummingbird?
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Which of the following animals can change its sex?
Which Mughal Emperor fought the battle of Panipat in 1526?
Who awarded the Kaisar-i-Hind medal of the British to Mahatma Gandhi for his contribution to ambulance services in South Africa?
Who invented the bifocal glasses?
To whom the Nobel Prize in Physiology or Medicine 2016 was awarded?
By which process the Chinese Scientists have cloned two identical long - tailed macaques?
An _______________ is a sudden shaking or trembling of the earth.