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The boundary of the permanently frozen region is retracting due to global warming.
It is easy to demonstrate how the heart works.
This video presents the diet and hunting behaviour of wolverines, Siberian tigers and snow leopards.
The Wallace line divides the fauna of Asia and Australia.
An introduction of the climatic and altitudinal zones of the African continent.
Our film, filmed in southern Africa, introduces the representatives of a disappearing lifestyle.
Some animals cover huge distances on a seasonal basis in order to survive.
Introducing the characteristics of the tropical rainforest climate
The Atacama Desert is the highest-elevation and dryest desert on Earth.
Sahara sand carries nutrients essential for the Amazonian flora.
Let's make music using various types of balls.
In strong light the pupil contracts, while in low light it dilates.
We can produce carbon dioxide gas using sodium hydrogen carbonate and acetic acid. The carbon dioxide puts out the flame.
The jaguar, which catches its prey with one leap, is one of the most dangerous predators in South America.
When the patellar tendon is lightly tapped, the extensor muscle stretches slightly.
Red-green colour deficiency is a genetic condition.
From a microscopic close-up you can inspect the movement of an amoeba with the use of its pseudopods.