What are hydrothermal vents and how are they significant?

Where would you most likely not find an alpine glacier? the himalayas the rockies the andes flat areas of antarctica

Which mantle is under the crust the upper mantle or the lower mantle i think it's upper let me know if i'm right

__1__ is a climate cycle where the temperature of the __2__ ocean changes because of movements of air and ocean currents. during this period, the trade winds in the south __3__ , causing the __4__ water to move from the __5__ region to the __6__ region. 1) el nino or the monsoon 2) atlantic, indian, or pacific 3) reverse, strengthen, or weaken 4) cold or warm 5) eastern or western 6) eastern or western