Yawning is a deep, long breath with the mouth wide open and a quick exhalation. Yawning occurs not only in humans but also in other mammals, birds, and reptiles. Even children who are still in the womb yawn.
The appendix (worm-like appendix) is a tube about 8-15 cm long and about 1 cm in diameter, extending from the lower end of the cecum and closed on the other side. It is a “blind” tube that leads nowhere.
The first reason. A tree’s leaves collectively have an extensive area, and water evaporates intensely from this entire area. In summer, the tree can compensate for losing moisture by extracting water from the soil.
The amount of water in our body depends on our age. Characteristically, a six-week embryo, which formed the rudiments of the basic systems of the future body, 97% consists of water, in newborns its amount decreases to 77%
Everyone knows that clouds comprise tiny water droplets or ice crystals. The water droplets in a cloud vary in diameter, from fractions of a micrometer to several millimeters. No matter how small the ice droplet is, it is still heavier than air