natural environment, economic development, water, and history
The region has grown in population overall, but that growth masks two defining population patterns.
natural gas
Central Asia is affected by that because of its large rainfall
slaves
Local winds are affected by local geographic features!
Go and ask your geography teacher
Erosion
It's not. Schizophrenia MAY be affected by DNA, but no specific patterns are known (yet).
Extreme dry conditions make some areas less habitable than others. Most regions with large populations are near water.
ecologists ^^ And ecologist studies the relationship between the environment and the organisms and actions that affect and are affected by it, including animal and plant life, weather patterns, and human activity such as agriculture, urban development and pollution.
Hunter-gatherers often had an adverse effect on the local environment through over gathering of the local flora. However, because they usually followed the migratory patterns of the animals they hunted, there was a recovery period allowed before they were in the same area again.