well in short tectonic plates but if your looking for a more in depth answer just let me know
Answer:
i think like this am not sure tho
Explanation:
Poor air and water quality, insufficient water availability, waste-disposal problems, and high energy consumption are exacerbated by the increasing population density and demands of urban environments. Strong city planning will be essential in managing these and other difficulties as the world's urban areas swell.
The upper mantle
hope this helps
Answer:
Because the sun rises in the east and sets in the west therefore it is dawn in the east before the west
