Urbanization brings noise pollution due to a larger population. This can be seen as one challenge. Another challenge is pollution such as plastic, gases, noise, etc due to the larger population. Also a big challenge is danger. You do not know the people as much in a larger town, therefore the danger to you is a lot more prominent.
Answer:
Because of clay
Explanation:
The clay in the earth is like glue it sticks to everything and therefor it dyes the rock red.
It does not include shipbuilding
