Several days after snowfall , the roofs of some homes on your street have almost no snow on them, while the roofs on other homes are still covered. assuming they have all received the same amount of sunlight, give one reason for this observation related to thermal energy & insulation.

Scientist have use computer models to create a series of maps that show how susceptible coastal cities in island countries are to the sea rising at different levels.the map shows that a 1 meter rise would swap cities all along the us eastern seaboard. a 6-meter sea level rise with sub merge a large part of florida. thermal expansion has already raise the oceans 10 to 20 centimeters the most likely cause,directly and indirectly, for such a rise in sea level is