A physical feature is the mountains, deserts, and lakes. It affects where people live because of the climate, food, and water available. For example, if you live in the mountains, than you must have more snow than someone who lives in the desert. People may not want to live there because of the cold, that is why many people do not live in the mountains.
Hope this helps! :)
The leeward side of the mountain is the side of the mountain that is covered by wind and you may notice that that side is drier than the windward side, which is the side that faces the incoming wind.
Now the leeward side temperature increases from top to bottom because when the air goes up the mountain from the windward side, it loses most of its moisture. So by the time the air goes down the leeward side, it lacks moisture and heats up as it loses even more moisture going down. This is called the rain shadow effect.
Pretty sure it's outer core, lower mantle because the inner core is solid iron