How many percent of the biological species of our planet are open and classified? Detailed answer

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How many percent of the biological species of our planet are open and classified? Detailed answer

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How many percent of the biological species of our planet are open and classified?

The total number of biological species living on our planet is estimated by scientists at 8,7 million, and at the moment no more than 20% of this number have been openly and classified. Moreover, if the number of described terrestrial plants is 72% of the maximum, then in terrestrial animals this figure is 12%, and in fungi - 7%.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

How do insects walk on water?

Some insects, such as water striders, walk freely on the surface of the water. Looking closely, you can see that where their thin long legs come into contact with the surface of the water, small dents appear on it. The surface of the water behaves as if it were covered with a thin film, which, under the weight of the insect, stretches without tearing.

Physicists call this phenomenon surface tension. It is due to the attractive forces between molecules. Inside the liquid, the attractive forces between the molecules cancel each other out, and the molecules located near the surface of the liquid are affected by an uncompensated resultant force directed inward from the surface. Therefore, in order to move a molecule from the depth to the surface of the liquid, work must be done against this resulting force.

Thus, molecules on the surface of a liquid have a certain potential energy, which manifests itself as surface tension. It is due to surface tension that a drop of liquid in weightlessness takes the form that ensures the minimum surface area - the shape of a ball.

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