Destruction of forests
Forest felling is one of the most serious problems of our time. This is true, since the value of forests in our world is very large. And this means that…

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Role of rivers in nature
The river is a significant amount of water flow flowing along the channel (deepening in the earth's surface) from the source (the beginning of the river) to the mouth (the…

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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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naturally occurring

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 to geographical definition, a lake is a naturally occurring closed entrainment filled with water in the earth’s surface.
The lakes are not part of the world ocean, being considered as something intermediate between the ponds and the seas. Continue reading

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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