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Arthur's
Seat in Edinburgh. These are the remains of an ancient volcano - the rocks
are igneous. The houses in the front have been made from stone
found in Scottish rocks - natural materials. The modern
building to the right will have been made from steel and concrete - both
man-made. Mind you concrete is made using cement, a man-made
material that is manufactured from limestone, a sedimentary rock - a natural
material.
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