Multiple Choice
Why is it difficult for "weightless" astronauts in space to know whether they are right side up or upside down?
A) The direction in which they are traveling changes rapidly.
B) Sunrise and sunset are no longer linked to a 24 hour day.
C) They can't see a horizon.
D) Maculae that report head position depend upon the gravitational pull on the otoliths.
Correct Answer:
Verified
Correct Answer:
Verified
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