Health

Health

Health

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What to eat during the winter to survive it in a good health? - Winter is a time when our organism experiences a "shock". Short days...

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The atmospheric pressure – it is a force exerted upon the surface of the Earth by the weight of the air (a column of...

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There are almost 300 000 species of angiosperms in the world of plants. The majority of them are dicotyledons. Most of them are annual...