Final answer:
Early Americans adapted to their environment by turning to a combination of hunting, gathering, and fishing.
Step-by-step explanation:
Early Americans adapted to their environment after the extinction of mammoths and other large animals by turning to a combination of hunting, gathering, and fishing. With the loss of these large prey, they had to rely on a variety of food sources to sustain themselves. They had to become more versatile in their approach to acquiring food, using different techniques and adapting to different environments. This allowed them to survive and thrive in the changing landscape.
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