HELP I GIVE BRAINLIST what are the drawbacks of relying on fossil fuels ?

A ) Increased levels of atmospheric carbon dioxide
B ) A reduction of air pollution levels in cities
C ) Unlimited supplies of coal, oil, and natural gas
D ) Fossil fuels always burn perfectly, so there are no drawbacks

Aforce of 200 n is applied to an input piston of cross-sectional area 2 sq. cm pushing it downward 2.8 cm. how far does the output piston of cross-sectional area 12 sq. cm move upward? show all work.

Global warming will produce rising sea levels partly due to melting ice caps but also due to the expansion of water as average ocean temperatures rise. to get some idea of the size of this effect, calculate the change in length of a column of water 1.00 km high for a temperature increase of 1.00ºc. note that this calculation is only approximate because ocean warming is not uniform with depth. (answer in ×10^{-3} −3 m)

Which composition of water moves to begin a deepwater current?