Answer: Formation of Iceberg
Explanation: A glacier is a very large mass of ice formed overtime by the compression of snowfall. Glacier are formed in very high altitudes and very cold parts of the Earth.
When a glaciar is exposed to ocean currents: it can break to form icebergs which are large mass of floating ice. This is breaking of glaciers is dependent on the temperature of the ocean tide flowing towards it.
D or c because one of them was agriculture that would be c but they also did the other two known as d but swaying towards c
The first natives came from Asia the part that is now known as Siberia Russia
So your answer is (A) Asia
Explanation: climatology is not a branch of human geography.