Is SC a compound element or molecule?

Which roman astronomer taught that the Earth is the center of the universe by mistake was? What can electrons do for an atom to form a bond? What the same about silica rich and silica poor magma? How did the San bushmen respect the natural environment? What is an antigravity position for testing shoulder flexion? What is the definition for fair? Which theory of plate movement relies on the weight of the subucting crust? What are the industries in the cordillera region? Why is couugh syrup thick rather than a liquid? Does gardening help global warming? What is anaerobic pathways? How many people died in Sendai Japan earthquake? How does the rotation of the earth effect atmospheric pressure? Do red blood cells have a nucleus when they mature? Is Ultrafiltiration a homeostasis? What did Thyco Brahe study? Why the Benedict's solution turn brick red colour when testing glucose content in urine? What fact concerning S waves indicates that zone C is not liquid? Does the clock on a rock set as soon as it begins to erode? Which term describes down-dropped blocks of crust bounded by step ply dipping normal faults?