<span>Oceanography is the study of the ocean and the cryosphere are the portions of the earth that are just frozen water (ice). When fresh water glaciers melt, they lower the salt levels in the ocean and and oceanographer studies that and makes sure that it wont have too much of an effect. The cryosphere plays a significant role in the global climate. </span>
Answer:
the first one is Primary
the second one I think it's Mature but I don't know
Answer:
For the first one, its B) cities B and C
I'm not so sure, but I hope this helps.
Water Could be Found in the frozen Ice on the moon. it would most likely be underground however
Life Expectancy Was Shorter
Trains were faster to ride
The population explosion was not as on date
