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Schooners, first built in the Netherlands in the 17th century, were mainly used as merchant ships.
From the 1940s, the increasingly large aircraft carriers became the masters of the oceans.
Treated sewage water can be used in agriculture and industry.
Raw iron is produced from iron ore in iron smelters.
The Voyager space probes were the first man-made objects to leave the Solar System. They gather data about outer space and carry information about humanity.
A bireme is a type of ancient warship, with a characteristic pointed bow and two decks of oars, used by many armies.
The fat-tailed scorpion is one of the world's most dangerous scorpions.
One of the oxoacids of nitrogen. Colourless, moderate acid with a pungent odour, that exists only in aqueous solution.
A compound formed as white smoke during the combustion of phosphorus.
The design and structure of modern houses play an important role in environmental protection.
The Channel Tunnel is a 50.5 km long railway tunnel between the United Kingdom and France, beneath the English Channel.
Metals forming hexagonal metallic lattices are rigid and difficult to machine.
Solar power stations convert solar energy into electricity.
Colourless, moderate acid, only known in aqueous solution.
The least tightly packed crystal structure.
The products of oil refining include diesel oil, petrol and lubricants.
The face-centred cubic metal lattice allows the closest fit of metal atoms.
This animation demonstrates instruments used to examine atmospheric phenomena.
One of the largest marsupials.
The Earth's continents have been in constant motion during the history of the planet.