The average american uses more than pounds of mined and extracted minerals every year. a) 500 b) 5000 c)20,000 d) 30,000 e) 40,000 sheetrock and plaster are produced from the mineral a) amphibole b) mica c) gypsum d) olivine e) pyroxene the mineral group formed when a single sulfur atom combines with another element is a) carbonates b) sulfates c) halides d) oxides e) sulfides

reflecting point a across the origin negates both of its coordinates.

b = (5, -4)

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.