he WEST SIBERIAN Plain stretches across northern India and is home to one-tenth of the world's population.
Answer:
Mountains isolated many groups that migrated to the region. Dense forest served as a barrier to migration across the region. Vast plains facilitated the migration of people across the region.
Explanation:
CORRECT
Think of a piece of paper that is enhanced to grow forever. This would
fit the definition of a plane. A plane is a flat surface that has no
thickness. A plane contains an infinite number of lines and extends
without end in the directions of its lines.