Biology
Biology, 18.03.2020 21:33, fireflies145

What distance was used to define the astronomical unit (AU)?
A) the average distance across the sun, its diameter
B) the average distance from the sun to Mercury, the closest planet
C) the average distance from the sun to Earth, our home planet
D) the average distance from the sun to Neptune, the farthest planet

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What distance was used to define the astronomical unit (AU)?
A) the average distance across t...

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