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Corals - an animal or a plant?

Mushroom cleft sprouts.

Erie - Lake in the Great Lakes

Those who live 300 years?

Fungal place in the Leningrad region.

Blue Planet: what people do for the protection of rivers and other natural objects?

What is a diamond?

The role of nature in human life.

The nature of Baikal.

Survival in the wild: useful tips

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Discounting - is a method of determining the capital
International Conflicts
Techniques and methods of teaching - factors affecting the quality of knowledge , creativity and intelligence , learning activities