Answer:
Jupiter's moons are orbiting Jupiter while Jupiter's position doesn't change. Each day, there are some moons visible, while others are hidden behind Jupiter.
Answer:
The use of the Pacific Ocean for trade and commerce is one big reason to consider Hong Kong and San Francisco as part of the same region. In addition, many current and former residents of Hong Kong feel a special kinship with San Francisco's Chinatown.

Most of them came from central africa and west africa.
I believe the answer is A) Geological processes contributed to the formation of vents in that region. I'm pretty sure it is...
Hope this helps....