_____(1) _____ are made by heating sand silica until it melts into a liquid state. The melted glass can then either be shaped by _____(2) _____ the liquid glass or by pouring the melted glass into a mold. The shape and size of the finished piece depends on the tools and method used by the artist.a.(1) Glass pieces of art; (2) condensingb.(1) Fiber crafts; (2) hammeringc.(1) Glass crafts; (2) blowingd.(1) Fiber pieces of art; (2) shaping