Tamarindus indica is the scientific name of ________.
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The source of energy in an ecosystem is
Sextant is an instrument used in which of the following ?
Why boiling point of water decreases at high altitudes?
The largest irrigation canal in India is _____________
What does the wheel in the National Flag represent?
Which country topped the list on "World Happiness Index", 2015 published by the sustainable Development Solutions Network (SDSN)?
In the following question, four words are given out of which one word is correctly spelt. Select the correctly spelt word.