<span>Scientists choose where are units of time began and ended based on major changes in life forms at certain times</span>
C average speed is used, which is total distance divided by total time.
Explanation:
From the analogy presented, we know that because the speed at which an object travels varies over time, the average speed is used.
The average speed is is the total distance traveled divided by the total time taken.
The average speed appropriately reflects changes in rate of speed with time.
It accounts for moments where a car slows and speeds up.
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Overly Populated. It is the 7th largest country and 2 nd most populated country.
Were is the rest of the question...I mean were is the so called column
