Okay, So Where is it NOT Distrbuted? (#1)

Some enviornments are not suitable for large amounts of people. Although constantly populated areas, called the ecumene, do exist, many dry lands, wet lands, cold lands, and high lands remain unpopulated.

Dry Lands are areas too dry for farming. They exist on about 20% of Earth's land. They lack enough water for crops and animals, but irrigation systems and new resources (oil) have attracted some people to these areas in recent years.

Wet Lands recive too much precipitation for humans. The excessive rain and heat near some equatorial areas can ruin soil and harm agriculture.

Cold Lands are areas constantly covered with ice or permafrost and normally exist near the poles. Cold lands are poor for animal survival, crop growth, and overall human life.

High Lands are areas that are steep and normally snow covered. More exceptions are found in these areas, but they are still often inhospitable for humans.