Biology, 04.02.2021 23:00 Wemaybewrong

PLEASE HELP which half of the celestial sphere is visible to a northern hemisphere observer?
a. latitudes greater than 0
b. latitudes less than 0
c. latitudes between 0 hours and 6 hours
d. latitudes greater than 20 N

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PLEASE HELP which half of the celestial sphere is visible to a northern hemisphere observer?