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When producing sound, the vocal cords are vibrated by the air flowing out of the lung.
The longest part of the digestive system, where most of the digestion and absorption...
The Internet allows us to send data quickly to large distances.
The atomic bomb is one of the most destructive weapons in human history.
Connective tissues include loose and dense connective tissues, adipose tissue, blood,...
The main parts of the human brain are the brain stem, the cerebellum, the diencephalon,...
A symbol of division and oppression, the Wall tore a city and numerous families apart.
The two groups of angiosperms are monocots and dicots.
The ancient city of Babylon was built on the banks of the Euphrates River in Mesopotamia.
Medieval townhouses were built from stone or brick and were several stories high.
The formation of the Sun and the planets started with the contraction of a dust cloud...
A mushroom is the fleshy fruiting body of a fungus, made up from hyphae.
Candles have been used for lighting since ancient times.
RMS Titanic was the largest passenger ship at the beginning of the 20th century
Combining a conventional internal combustion engine propulsion system with an electric...
The first supersonic passenger airliner entered service in 1976.
Commercial maritime routes of container ships form a global network.
This animation presents the main types of leaves and the differences between monocot and...
This animation demonstrates the structure and operation of CT scanners.
River locks make rivers with great level differences safe for boating.