How man kilo-calories of heat are required to raise the temperature of 225 g of aluminum from 20 c to 100 c?
0.59 kcal
3.8 kcal
38 kcal
85 kcal

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.