Which of the following phrases does not describe a cause of the greenhouse effect?

Which city area has the most accessible oil reserves a) caspian sea b) siberia c)arctic coast d)lake baikal

Some gamma ray bursts are hypothesized to come from mergers of neutron stars or black holes. if this hypothesis is correct, what else should we in principle be able to detect from such mergers? a. gravitiational waves b. x-ray bursts c. significant disruption of gas thousands of light-years away in the surrounding galaxy d. an "afterglow" of bright visible light, lasting for weeks

What way does renewable energy differ from nonrenewable energy?