As the largest living structure on the planet, the Great Barrier Reef is incredibly rich and diverse. Stretching 2300 kilometres, this natural icon is so large it can even be seen from outer space. While itâs known mostly for its large maze of colourful reefs, its intricate architecture also provides a home for a huge number of plants and animals.
Magnesium (Mg) is the lightest of all metals, being about two-thirds lighter than aluminium. Magnesium is non-toxic, non-magnetic, has high-impact strength and is resistant to denting. Magnesium is too reactive to occur in nature as an element, but its compounds are common. At 2.5%, magnesium is the eighth most abundant element in the earth's crust. It is the third most abundant element in sea water which averages about 0.13% magnesium by weight.
Uses of Magnesium. 1  Magnesium is widely used as a part of aluminum alloys. 2  This includes alloys used in aluminum beverage cans. 3  Magnesium, alloyed with zinc, is used in die casting. 4  In this process the molten metal is forced into a mold (die) under high pressure and this takes on the shape of the mold when it cools.ses of Magnesium. 1  Magnesium is widely used as a part of aluminum alloys. 2  This includes alloys used in aluminum beverage cans. 3  Magnesium, alloyed with zinc, is used in die casting. 4  In this process the molten metal is forced into a mold (die) under high pressure and this takes on the shape of the mold when it cools.