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RMS Titanic was the largest passenger ship at the beginning of the 20th century.
This animation presents the main types of leaves and the differences between monocot and dicot leaves.
Yuri Gagarin became the first human in space on April 12, 1961.
The first supersonic passenger airliner entered service in 1976.
Commercial maritime routes of container ships form a global network.
Evaporating surface water forms clouds of various shapes from which water falls back to the surface as precipitation.
One of the best known buildings in the world, this is the residence and office of the President of the United States.
The world famous monument in England still poses mysteries for archeologist.
This animation demonstrates the parts of the head, the torso and the limbs.
The average house in Ancient Greece had a rectangular, geometrical floor plan and two stories.
The rise and drop of sea levels caused by the gravitational force of the Moon.
The legendary city of the Mayan-Toltec Empire was located on the territory of present-day Mexico.
The central nervous system consists of the brain and the spinal cord, the peripheral nervous system consists of nerves and ganglia.
The skin is the soft outer covering of our body, its three layers are the epidermis, the dermis and the hypodermis.
Dry land on the surface of Earth is divided into continents which are separated by oceans.
Carbon is bound in organic substances during photosynthesis, while during breathing, it is released into the atmosphere.
A widespread snail species, also popular as food.
Lateral compressive forces cause rocks to form folds. This is how fold mountains are formed.
When the Sun, Earth, and the Moon are arranged in a straight line, the Moon can partially or completely obscure the Sun.
A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.