Answer:
The satellite is being accelerated towards the Earth by the gravity of the Earth, but because it's moving sideways too quickly, it keeps missing the Earth. So it keeps falling, but not getting closer. This is what it means to "orbit". In orbit you have two forces balanced, gravity and centripetal acceleration
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He underestimated the circumference of the world and he did not realize that there was something between Asia and Western Europe.
I don't understand stand what you saying
B) Cultural groups may be isolated and thus become more distinct.
This is because traveling over mountains can be hard or dangerous which will result in little long distance travel and in result little interaction with other groups
