Plain roach
Roach is a very common fish belonging to the family of carp. Other names of this species - vobla, ram, chebak, squire, fence. And it has such a large variety…

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The importance of swamps in nature
The swamp is a part of the earth's surface, which has excess moisture, high acidity and low soil fertility, which is the consequence of raising the ground water to the…

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World ocean and its properties
The ocean covers about 70% of the surface of our planet. Thus, it is an aquatic membrane, stretched almost all over the surface of the Earth. The oceans are continuous,…

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quite dangerous

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…

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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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