How do physical geographic systems impact human geographic systems?

The physical geographic systems are a big factor in the human geographic systems. This is because certain physical geographic systems simply don't provide the conditions for the humans to settle in and have their activities there, like the high steep mountains, volcanoes, saline lakes, vast deserts, and on the other hand we have places that provide nice conditions for the humans to live in and do their activities, like the grassy plains, shores of the rivers in the valleys, plateaus in the equatorial region, etc. So we can conclude, that the geography actually dictates where, how, and what number will people be able to live and do their activities.