It's C) and D)
I read it on the lesson itself.
After all ice caps have melted and the polar bears drown, and the coastal cities are all underwater, Al Gore will ride a spacecraft to the Moon or Mars and inhabit there and tell everyone I told you so...
Cool ocean air causes a cool climate". This is especially true near the coastlines of the major oceans, which benefit from moist, cool breezes.
Answer: 1917, two revolutions swept through Russia, ending centuries of imperial rule and setting into motion political and social changes that would lead to the formation of the Soviet Union.
Explanation: