Zoos are becoming facsimiles - or perhaps caricatures - of how animals once were in their natural habitat. If the right policies toward nature were pursued, we would need no zoos at all.
The Crust consists of 32% Iron, 30% Oxygen, 15% Silicon, 14% Magnesium, 3% Sulphur, 2% Nickel which totals 96%. The other 4% is made up of trace amounts of Calcium, Aluminium and other miscellaneous elements.
