Because circumpolar constellations never rise or set, they provide reliable reference points for astronavigation. Knowing the circumpolar constellations in each hemisphere allows navigators to find their way using only the stars.
The continental plate is less dense that the oceanic plate and so sinks underneath the oceanic plate. The oceanic plate holds water and so when the continental plate sinks underneath it, the water from the oceanic plate covers the continental plate.
Answer:
Nigeria, Algeria, Libya, Tunisia, Gabon, and Egypt
Explanation:
i'm going to guess i don't know
