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Biology, 10.10.2019 05:00 julie66491

Scientists studied a flock of tundra swans that spent the winter along rivers in virginia. the swans migrate in the spring to other locations. what would be the best way for scientists to distinguish between the birds they study in virginia and flocks in the summer location?

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Scientists studied a flock of tundra swans that spent the winter along rivers in virginia. the swans...

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