Which of the following terms means that metals can be pulled into thin strands or wires? [like copper] A. polar
B. alloy
C. ductile
D. malleable

Which best describes the present-day universe? opaque, expanding very slowly, stars produce heavy elements transparent, expanding at an accelerated rate, stars produce heavy elements opaque, expanding at an accelerated rate, stars produce only hydrogen and helium transparent, expanding very slowly, stars produce only hydrogen and helium