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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The significance of ecology in our world
Ecology is called science studying the interaction of living organisms among themselves, as well as with the surrounding world. This is necessary in order to minimize the harm done by…

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Artificial reservoirs of our planet
An artificial reservoir is a pool of water formed by a human being, for the purpose of its conservation, accumulation and further use. In other words, this place created by…

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mammals belonging

White shark is a dangerous predator
White shark is a species of large predatory fish. And although they are best known for this name, there are others. So, the full name of these fish is Big…

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Karas and its features
Karas is a fairly common species of fish belonging to the family of carp. Interestingly, in this species there are several species of crucian carp, one of which is the…

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