The lakes and their role in nature
The lake is a naturally occurring water filled with water in the boundaries of a lake bowl and has no direct connection with the sea or the ocean. Or, according…

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Lizards and their peculiarities
Lizards are a subcatch of scaly reptiles. Its composition includes practically all flaky reptiles, with the exception of snakes. And with snakes, by the way, many lizards are very similar.…

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Frogs and their significance
Frogs are a group of very common animals, in which you can include, as well as all non-tailing amphibians, and only representatives of the real Frog family. Usually, under the…

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have a cellular

Viruses and viral diseases

The virus is an infectious agent that does not have a cellular structure, and is capable of reproducing only within cells of living organisms. For this they are referred to obligatory parasites.
They exist wherever there is life. And they are at the same time the most numerous form of life. Their study is practiced by science of virology. Continue reading

The harm and the benefit of aloe
Aloe - a family of succulent plants, numbering more than 500 species. Of course, far from all of them have medicinal properties. However, some species, common in the Russian-speaking countries,…

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The structure of the mountains and their classification
Mountains are uneven parts of the land, rising steeply over the adjoining areas of 500 meters or more. They can have different shapes, drawings, size. Because of what they are…

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