___ is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.
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Four words are given, out of which only one word is spelt correctly. Choose the correctly spelt word and click the button corresponding to it.
Plant tissues are of how many types?
Which of the following Phylum are also called flatworms?
Which permanent tissue makes a plant hard and stiff?
Which of the following elements has the lowest melting point?
Name the first Indian to get Nobel prize in economics.
Calculate a country's GDP if for the year, consumer spending is $900 million, government spending is $250 million, investment by businesses is $180 million, exports are $85 million and imports are $100 million.