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Neftegorsk earthquake (28 May 1995).

The beauty and majesty of water giants: what is the waterfall?

Reefs - what is it?

Willow - Willow Wood family: description, photos

North America - environmental problems.

Types and varieties of pine.

Where winters seagull?

Zeya River.

Why chickens do not fly, because they are the same birds?

European hedgehog: care, reviews, photos.

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We expect the speed of sound in km
Maclaurin series and the expansion of certain functions
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