The correct answer is letter D. Economy. Perestroika, as announced early in his years of leadership, was Gorbachev's policy to restructure the economy. At that moment, it's one of the crucial things to be taken care of.
I am pretty sure it is tourism, because they get a lot of money from tourists
hope this helps, sorry if im wrong!
Descending air dominates in the subtropics (20° to 30° North and South latitude) and the poles. The global distribution of precipitation shows that the wettest areas on Earth are in the "rising air" zones, while the driest areas (subtropical deserts and the even drier polar areas) are in the "descending air" belts.
Answer:
Carbon dioxide (and other gases) in the
atmosphere cause a greenhouse effect.
