I think get energy. right?
Rocks are made of minerals. Only a few minerals are rock forming and most rock is made from a combination of the commonest of these such as feldspars, quartz, mica, olivine, calcite, pyroxene and amphiboles.
hope this helped :)
You have to pay more attention at class to understand the question dummmie..!!
B) Carnival In Rio de Janeairo. Hope this helped.