Answer:
5. 16
I do not understand what you wrote for the rest
Explanation:
Factors increasing erosion
Coastal erosion: the strength of the waves breaking along the coastline. Bigger, stronger waves have more erosive power.
Abrasion - rocks carried along by the river wear down the river bed and banks.
Attrition - rocks being carried by the river smash together and break into smaller, smoother and rounder particles.
Answer:
The most common geographic boundary is the physical boundary.
Explanation:
Rivers, mountains, lakes, deserts are all physical boundaries.
The Mississippi River is a physical boundary between many countries that trespasses, including Iowa and Illinois, Louisiana, and Mississippi.
Pyrenees Mountains are also the geographic boundary between France and Italy.