how is a desert formed

how is a desert formed ? Deserts are arid areas where a small number of plants and animals are adapted in large terrestrial areas, which are below 25 cm per square metre average. About a third of the earth is covered with deserts. Very few people live in these areas. Deserts are divided into warm, cold and medium-generational deserts. It is an example of the middle-generation deserts in Central Asia and the Great Basin in the United States. In these regions, winter is very cold. The hot desert in China as an example of the cold desert, the Atakama desert in Chile.

How do the deserts occur?


The deserts; Can be seen on every continent on Earth. The common characteristic of all deserts is that they have very little rainfall. The formation of the deserts is dry air originating from high pressure.


The warm and humid air moves towards the tropical areas. It intensifies as it rises, cools, and 30 in both hemispheres. In latitudes, the air is compressed and heated due to pressure on it. Moisture retention capacity increases. In these regions the rain falls below 200 mm per year. A cloudless environment occurs on the desert that will occur. The sun's rays evaporate the water in the ground directly. It is one of the reasons for the formation of deserts.

We will explain two reasons for the formation of the deserts: cold currents and Rainshade in the ocean. Cold water flows that are seen along the western shores of the land in temperate areas will cool the surface of the sea. That's why the air mass cools. The rain does not reach the shores because an air mass that has cooled down has decreased water retention capacity. As an example, the Atakama desert in Chile is shown in the Namib Desert in southwest Africa. The rain shadow event also rises to the land of the moist air mass, which is the way to the ground, when the mountain is faced by the shore, the slope height. It leaves rain as a rain of nature. The clouds that exceed the mountain are also dry when the air is moving to the inner region, warming up. The deserts that formed this way are examples of the Mojave Desert in the shadow of the Nevada mountains in California.




Living in the desert


5% of people on Earth live in the deserts. These people reside in fertile areas near water resources, either nomadic or living in an oasis.


Animals living in the desert adapt to the desert conditions. They have a hard and impermeproof shell that restricts the sweating of animals such as crustaceans, scorpions, insects and spiders; camels and gazelle are also very dense in order to minimize water loss. Arab camels can normally lose 30% of their body weight (this ratio is dangerous for people). Then they drink up to 120 liters of water. To escape from the heat, snakes are stored in the crevices; in lizards, they dig a refuge in the sand; with the pyramid mouse, they adapt to live in the desert by bouncing the kangaroo-mouse. Apart from these animals, they live in animals such as the Kut, foxes, desert turtles, Birds (owl, woodpeckers). Most animals walk out of their shelters at night. During the day, they enter their shelters especially at noon. Lizards don't enter their shelters until noon to balance the body temperature.

The cactus plant is dehydrated, its roots are around, so it can collect more water when it rains. The collected waters are stored in the body or on the leaves. The surface of the cactus prevents water loss.


Some of the desert plants are: Cactus, feorocactus, Gasteria bekeri, Cereeus, Carnegia, palm trees. There are also desert flowers: Echinopsis, Hodtricia and Chamererus rhodatric. Some desert plants provide both nutrients and shelter for animals.


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