When brass corrodes, it can undergo dezincification ... In the other, both the copper and zinc corrode and are removed from the alloy, but the copper ions in solution plate back onto the surface. In ...

The St. Gabriel’s Technical Secondary School (SGTSS) in Kiunga held a tribute to honor the late Rt. Hon. Sir Julius Chan, a founding father of Papua New Guinea.

The Earth's hard outer layer (where we live) is called the crust. It is made up of large slabs called tectonic plates. The plates fit together like jigsaw puzzle pieces far beneath our feet.