Answer:
a. pyroxene (augite)
Explanation:
Pyroxene is a mineral which is found in igneous and metamorphic rocks of the earth crust. They are dark green in color. their formation needs high degree of temperature and high pressure. Pyroxene is made up of silicon as a major element but some elements also present in it such as Ca, Na, Mg, Fe, Al and Ti. Its chemical formula is (Ca,Na)(Mg,Fe,Al,Ti)(Si,Al)2O6.
Your answer should be A.
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True brazil has 5,570 municipalities
Red Sea Reef, since a reef is a productive and diverse organism with different species of coral.