What is a symol?

What planet is terraformable? Why does pollen have spikes? In bogota Columbia what months does it snow? How to test a well pressure tank? How is the Urea Hydrolysis test used in microbiology? What must happen first before magma rise to the surface? How are seed adapted for each mettod of seed dispersal? What is left after a tsunami? What is 48N 123W? How was interdicts used? Four processes that could be regarded as natural hazards? Which gemstones are cabochon cut aquamarines turquoise diamonds opals star sapphires? Element used in photoelectric cells and in atomic clocks? Why is the reaction of CFC's with ozone considered catalytic? Is the skin squamous cuboid or columnar? Why is the time of the lycophytes called Carboniferous? Where have some tsunamis hit in the world apart from japan? What is the fastest ball bowled by a women? What does bacteria receive energy from? What is excessive bronchial mucus called?