How to insulate water supply pipes on the street?

Water supply at home is an objective condition for the normal living of its inhabitants. SNiP 2.04.01-85 "Water consumption rate by consumers" regulates water consumption in the range from 80 to 230 liters. per day per person. Consumption depends ...

The first plants on Earth

With the reproduction of blue-green algae, also called cyanobacteria, the oxygen content in the air gradually increased. Probably, at first he destroyed a lot of bacteria, but over time they ... With the reproduction of blue-green ...

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