Is it always hot in the desert? Detailed answer

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Is it always hot in the desert? Detailed answer

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Is it always hot in the desert?

We used to think that it is always hot in the deserts. In fact, most of the well-known deserts, such as the Sahara, are located in those areas of the world where the liquid in the thermometer literally begins to boil, and the scorching rays of the sun know no mercy. However, this does not mean at all that the desert is necessarily a place where unbearable heat reigns forever.

Let's try to define what a desert is, and then we will understand why this is so. A desert is a region in which, due to lack of moisture, only special forms of life can exist. In "hot" deserts, everything is clear: it just rains too rarely, which is quite consistent with our definition. However, imagine a place where all water is frozen and therefore cannot be absorbed by plants. Such a region also fully satisfies the definition of a desert, only not "hot", but "cold".

Do you know that most of the Arctic is a real desert? The annual precipitation (meaning only rain) is less than 40 percent there and most of the water is never-melting ice.

However, it is also cold in "hot" deserts. For example, in the great Gobi Desert, located in Central Asia, there are bitter frosts in winter. Most of the dry, always hot deserts are located in two belts that stretch around the globe north and south of the equator. Due to the constant high atmospheric pressure, precipitation almost never falls there. The existence of other deserts located farther from the equator is explained by the fact that they fall into the "rain shadow" region. This term is used to denote the effect created by mountain ranges that prevent the penetration of clouds coming from the sea into the depths of the continent. None of the major rivers originate in the desert.

However, on their way to the sea, rivers can pass through desert areas. The Nile, for example, flows through the Sahara before reaching the Mediterranean. A significant part of the Colorado River in North America also lies in the desert.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

What is the main benefit of bees?

The main contribution of bees to providing people with food is not the honey they produce.

With all the indisputability of its benefits and healing properties, the activity of bees in pollinating plants is much more significant. Without the help of these pollinating insects, neither the clover, nor the cucumber, nor the apple tree, nor the cherry, nor the buckwheat, nor the sunflower would simply be able to realize their biological potential.

Thanks to pollination, the yield of crops doubles and even triples. The resulting profit exceeds, according to experts, the income from direct beekeeping products by dozens of times. Berries also ripen twice as much in those forests where there are apiaries, which accordingly increases the number of forest game.

This was well understood by the Russian Empress Catherine II, who abolished all taxes for beekeepers. Nowadays, in many countries, in particular in Germany and the USA, there are beekeeping support programs as one of the most effective ways to increase plant yields.

For example, a manager of one of the American commercial companies, who delivers beehives to farms in his spare time, receives 39 thousand dollars a year from the federal authorities.

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