What happens if you don’t plan for the future in subsaharan africa or the brazil

What happens if you don’t plan for the future in subsaharan africa or the brazillian rain forest?
What happens if you don’t plan for the future along the ice sheet?
(selection)
AND
What happens when you live largely outdoors in open territory?
What happens when you live in close quarters in winter?
(selection)
AND
What happens when you live in small populations near other small populations?
What happens when you have a small isolated population amidst other small isolated populations?
(selection)
What happens in the disease gradient of africa vs the winter regions?
(selection for very different things)

Reply addressees: @madmikeross @DwightExMachina