Answer:
I think it was the totally hair Barbie.
The answer is weathering. Weathering is where rocks or other materials are broken down because of forces like wind or water. This is different than erosion, which is the process where the broken down materials are moved.
African-American citizens made up a full three-quarters of regular bus riders, causing the boycott to have a strong economic impact on the public transportation system and on the city of Montgomery as a whole.