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the part of the atmosphere that contains the ozone layer and is about 10 km above the Earth's surface.
the non-living ground tissue with thick-walled cells that gives strength, support and protection...
endocrine gland situated on top of each kidney, which produces hormones in response to stresses...
energy resources (coal, crude oil and natural gas) derived from the fossilised remains of plants...
the inner region of the kidney, striped in appearance, made up of renal pyramids.
is one-millionth of a metre or one-thousandth of a millimetre (0,001 mm). Its unit symbol in the...