1. What is the shared staple mentioned in the diets of both Native Americans and Pacific Islanders?

Answer:

The sweet potato.

2. What genetic evidence supports the possibility of contact between Native Americans and Polynesians?

Answer:

Genetic studies have revealed a genetic signature of South American Native People in Polynesians on several Pacific islands.

3. How does the passage describe the navigational skills of Polynesians and Native Americans?

Answer:

The passage mentions the remarkable navigational skills of both Polynesians and Native Americans, as evidenced by their ability to make long journeys across open oceans.

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