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The catalytic converter is a special filtering device that neutralises harmful exhaust gases emitted by cars through chemical reactions before being released into the atmosphere.
This scene presents the transport network and main administrative divisions of Malta.
Vennad Wrightid ehitasid esimese juhitava mootoriga õhust raskema õhusõiduki.
The inner planets of the Solar System are terrestrial planets while the outer planets are gas giants.
River locks make rivers with great level differences safe for boating.
Inglise insener George Stephenson ehitas auruveduri Rocket 1829. aasta vedurite võistluseks.
Neoliitilise revolutsiooni tulemusena hakkasid mitmed hõimud rajama esimesi püsivaid asulaid.
Giza püramiidid on vanaaja seitsme maailmaime hulgast ainukesed, mis on tänaseni säilinud.
Tavaline Vana-Egiptuse maja koosnes korrapäraselt paiknevatest tubadest.
Londoni ringikujulise põhiplaaniga poolavatud renessansiteatri üks juhidest oli William Shakespeare.
Peale II ms populaarsust kogunud konteinerlaevade kaubaveomarsruudid moodustavad ülemaailmse võrgustiku.
Esimene ülehelikiiruse liikuv reisilennuk alustas regulaarlende 1976. aastal.
Bacteria occur in a wide range of shapes, including spheres, rods and spirals.
The ribs, the sternum and the spinal column form the skeleton of the chest.
Eukarüootsetel rakkudel on palju erinevaid organelle.
Lymph vessels carry lymph to the blood vessels, while lymph nodes are integral parts of the immune system.
The pancreas and the liver empty digestive juices into the duodenum.
The eye is one of our most important sense organs. When stimulated by light, electric impulses are produced by its receptors.