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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D. Encourage the growth of a new Great Leap Forward
d. rift valleys
rift valleys from when two oceanic plates converge
The correct answer for the question that is being presented above is this one: "oxygen became available from cyanobacteria." About 1.2 billion years ago, eukaryotic and multicelled organisms evolved because oxygen became available from cyanobacteria.
