Answer:
There is no article given, but the definition of erosion is the removal of dissolved material, soil, and rock on the Earth's top layer.
Explanation:
A topographical map shows elevation
75-79? I think that is what is; the shape are so similar so its kinda hard to tell
Answer:
<h3>Migration can be defined as “a process of moving, either across an interna- tional border, or within a State. ... The phenomenon of migration has been indispensable to human histories, cultures, and civilizations</h3>