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This animation presents the current refugee crisis from various points of view.
Several European countries joined the conquest of the New World, making America a...
This animation demonstrates the main sources of soil pollution.
The main sources of water pollution are industry, agriculture and urban areas.
A transitional form between fish and tetrapods, or four-limbed vertebrates.
Subterranean rodents widespread in Central- and Eastern Europe.
Find views and nets of three-dimensional shapes.
Competing with each other in the 19th and 20th centuries, the world´s most powerful...
This animation demonstrates the use of modern technology in agriculture.
This animation demonstrates the relative position of lines and planes.
This animation demonstrates the angle of inclination of lines and planes in various...
The US Marine Corps is an important branch of the US Armed Forces, with about 200...
This animation demonstrates various types of cones and pyramids.
An exercise about the generation of solids of revolution.
Small farms usually located near the border of rural towns, inhabited by peasants.
The Mir Castle Complex, situated in the town of Mir, Belarus was built in the...
The structure of fortresses developed together with military technology.
The Orthodox church, situated on a picturesque cliff, was named after John the Apostle
The theorem formulated by Leonhard Euler describes one of the basic properties of convex...
Rotating a rectangle around its axes of symmetry or around its sides results in solids of...