C. When anhydrous salts, which can exist in hydrated form dissolves, its enthalpy of solution is usually negative whereas when hydrated form of the same salt dissolves, its enthalpy of
solution is always positive. Explain

why is arctic sea ice important? arctic sea ice keeps the polar regions cool and moderate global climate. sea ice has a bright surface; 80 percent of the sunlight that strikes it is reflected back into space. as sea ice melts in the summer, it exposes the dark ocean surface.