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Raw iron is produced from iron ore in iron smelters.
People with a higher social position tend to separate themselves from the lower social classes....
This lesson presents how wind energy can be utilised.
Treated sewage water can be used in agriculture and industry.
This lesson encourages the use of the Global Positioning System.
This animation demonstrates instruments used to examine atmospheric phenomena.
The animation shows the two-seater Lunar Rover used in the Apollo 15 mission