Answer:
There are four forces of evolution: mutation, gene flow, genetic drift, and natural selection. Mutation creates new genetic variation in a gene pool. Gene flow and genetic drift alter allele frequencies in a gene pool
the answer is Air and Water pollution.
No not all of it some people still agreed but then again I am not sure.
:)
I REALLY HOPE I HELPED
The piedmont region of North Carolina is known for having soil that is good for making bricks