An___fan is a fan shaped discharge of sediment and debris, usually caused by a sudden and intense downpour of rain, which flows quickly over changes (breaks, gulch, etc.) in topography.

Alluvial fan

Explanation:

This is an alluvial fan. An alluvial fan can be described bas sediments accumulation. It is shapes like a fan or a triangle. It is a deposit of sand, gravel wooden deposits, debris and silt. We call these alluvium. The creation of alluvial fans is as a result of the interaction of flowing water with hills and mountains. They are depositional land forms and flowing water causes them.

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.

i think the answer to your question is: settlement of the interior and economic growth. ( ^_^)／