Tiger is the world's largest cat
Tigers are a kind of mammals that belong to the cat family. They represent fairly large, fast and strong animals, making them dangerous predators. This is evidenced even by their…

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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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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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Their study

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 obligatory parasites.
They exist wherever there is life. And they are at the same time the most numerous form of life. Their study is practiced by science of virology. Continue reading

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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Blood-sucking mosquitoes
Mosquitoes are a family of flying blood-sucking insects. For this feature they also received another name - Bloodsucking mosquitoes, although usually it is reduced. Apart from the fact that these…

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