1. What environmental problems resulted from human modifications of landscapes in the 1960s and 1970s?

global food supply would not be able to support the increasing number of people on Earth. He predicted that the world would experience wide-scale hunger by the 1970s.

Explanation:

i think the answer is the one about environmental and social health.

hope this

the map that was shown mostly had eastern asia highlighted. the answer would mostly likely be "the spread of communism into eastern asia set the stage for the korean war."

hopefully this .