pasagot

pamigay ako mamaya point 50

Supply the missing letter

17.An imaginary belt circling the heavens close to the plane of the ecliptic, or the earth's orbit around the sun
_ _ D _ _ C

18.Constelations are useful to navigators beacause they used them to tell general ____
D _ _ _ _ T _ _ _ S

19.Many of these constelations were discovered by ancient ______
G _ _ _ K _

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