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The largest tsunami in the past 10 years in the world

Environmental problems of the West Siberian Plain.

What to do during an earthquake?

Perfumers know a way to resurrect the dead celebrities

What pollutes the air in the city?

Why is it necessary to protect and preserve wild plants?

Air protection against pollution in Russia and abroad

Where a lot of mushrooms in the Leningrad region.

Aeration - Aeration system is ...

Mica - is that in the mineral?

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