When Was the First Gas Balloon Used?
When Was the First Gas Balloon Used? The first gas balloon, filled with hydrogen, was released in Paris in August, 1783 which was designed by a French professor of...
Read MoreWhen Was the First Gas Balloon Used? The first gas balloon, filled with hydrogen, was released in Paris in August, 1783 which was designed by a French professor of...
Read MoreWhy Star Is Called a Body of Luminous Gas? A star is a body of luminous gas, like the sun. But as the stars are much farther away from the earth than the sun, they...
Read MoreWhy Are Stars Different Colors? Stars are many different colors because some of them are hotter than others. Stars are either red, orange, yellow, white or...
Read MoreFish can drown under certain conditions. It isn’t the water that keeps fish alive, but the oxygen in the water. Fish breathe oxygen, just as we do. The water...
Read MoreWhat Is Fertilizer? Plants need six basic nutrients to survive: carbon, hydrogen, oxygen, nitrogen, phosphorus, and potassium. The first three — carbon, hydrogen, and...
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