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…

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Caves and their peculiarities
A cave is a natural cavity in the upper layer of the earth's crust, which has at least one exit to the surface. Sometimes caves are the most complicated systems…

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Types of microorganisms and their significance
Microorganisms are a group of so small living organisms that they are not visible by human vision. Their size is less than 1 millimeter, and, sometimes, much less. Although there…

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accumulation and further use

Plains of our planet

Plains are areas of the earth’s surface, with a slope of no more than 5 °, and oscillations of heights of no more than 200 meters. This means that the plains do not necessarily have to be even areas of land, as many people think. They can have both flat relief and hilly. And they can be located not only on land, but also on the ocean floor (deep-water plains), on the shelf (shelf), and at the foot of the continents (sloping). Continue reading

Land and relief of the planet

  • Sushi is called the part of the surface of the planet that is not covered by oceans, seas, lakes, rivers and other water objects. And its share accounts for less than one third of the Earth’s surface. More specifically, the order of 29.2%. And all this territory is divided between different natural zones.Forests occupy most of the land (about 27%), although everything may change in the near future as the felling of the forest does not stop. Another 21% of the land is allocated under pasture (grassland for cattle grazing). Almost all the remaining part of the land in about equal proportions (9-11%) is divided between the deserts, arachnids and glaciers. Continue reading
Salvia officinalis
Medicinal sage is a grassy plant of the genus Salih. Its name, as you can guess, received this form for the medicinal properties that it possesses. Medicinal sage does not…

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Millenium, or Cutting grass
Thistle ordinary, or Cutting grass - is a perennial grassy plant with many beneficial properties. It got its names due to the separation of leaves into a large number of…

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