Answer:
Mountains isolated many groups that migrated to the region. Dense forest served as a barrier to migration across the region. Vast plains facilitated the migration of people across the region.
Explanation:
CORRECT
Answer:wild fires
Explanation:wild fires clear away dead grass and trees
I would think population density
C: Ecosystem 1
Because there’s not a lot of diversity in only 10 species, making it easy to wipe out the entire population.
