Pollution of reservoirs
Water pollution is a serious environmental problem. Indeed, water is essential for the existence of all living organisms, including humans. But its contamination makes it impossible to use water for…

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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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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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them is engaged

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 are relatively large organisms in this group, they can even be considered with due diligence. The study of all of them is engaged in the science of microbiology. Continue reading

Cultivated plants of our planet
Crop plants are those plants that are grown by humans for eating, feeding animals, receiving medicines or raw materials, etc. All these plants are also called agro-crops. Barley Classification 1.…

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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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