question5answer1 | andorin

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A - 45 meters, the same as a 15-story building

B - 450 meters, the same as a 150-story building

C - more than 4500 meters, higher than a 1500-story building

That would be quite high, but no! Swifts migrate by flying higher than that! Try again!

What altitude do swifts reach
during migration?

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