The prefix for Bio is life so a biologist studies life of living organisms
The prefix for Geo is earth so it would be the study of earth.
What is in common would be animals and plants
what is different is an Geologist studies only earth Biologist studies everything living. I hope this was helpful and I didn't confuse you.
The force is gravitational because when something is falling is call gravitational
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The answer is transmission
uses a series of gears to transmit power to facilitate changes in speed .
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