Просмотр: Криптовалюта

These are balls of air. “Why does the air rise to the surface of the water?» — you ask.

Perch the straw into the water and blow in that of its tip that is on the surface.

This is the air. You can see the air?

It is also easy to do. This requires rubber pear.

What did you feel? This air affectionately touched your face.

Look at the oxygen concentrator Moscow here.

This is because the air is no longer so dense at the height.

In the troposphere, the lower layer of the atmosphere, the air is dense, thick, although we do not feel it…

The air surrounds our planet with a dense shell called the atmosphere.

In addition to books, the book shelf also contains air, the school portfolio among textbooks and notebooks also “hid” air,…