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Gravitational force of the earth
Every year on the last weekend of October, on the night from Saturday to Sunday, Poland and the European Union switch to winter time by switching the arrows
Plants
Tundra vegetation
The extremely harsh living conditions in the tundra are extremely unfavorable for plants. The amount of solar heat here is two times less than in a temperate climate. The time during which the development of plants is possible is very short - 2-3 months. Winter continues
Animals
Russia is divided into five
Tatyana Nefedova, an expert, a leading researcher at the Institute of Geography of the Russian Academy of Sciences, Doctor of Geography, tells about the most little-known territory of the country - the countryside. - Your colleagues, urbanists and regional experts, who have already spoken on the pages of “But
Nature and people
aquatic insects
The world of aquatic insects, as well as the world of insects of the hidden environment, come from the open environment. Some aquatic insects radically changed their appearance, being fully adapted to the aquatic lifestyle, others - partially. And on what paths did not go
Plants and animals
Characteristic plants of the tundra
The natural zone of the tundra occupies about 5-7% of the planet's land. The climate of the zone is characterized by the absence of warm summers. In this climate, it lasts only a few weeks, and the average air temperature reaches 15⁰С. Low temperatures cause moisture to accumulate and this