Air masses can<span> bring anything from tropical warm and humid days to arctic cold depending on the type of it.</span><span> Fronts form the boundaries of </span>air masses<span> with differing properties.
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Demand curve is the ratio of demand (of whatever) to its price. It indicates the inverse relationship of what's demanded and the price
Mt. Vesuvius is A VOLCANIC MOUNTAIN.
It was famously known for causing the fires of Pompeii and killing millions of people.
Mt. Vesuvius, a cone-shaped mountain is part of the Campainian Volcanic Arc. It has erupted 30 times as recorded by scientists. It is currently considered as one of the top ten most dangerous volcanoes of the world.