Answer:
The need for continental time zones stemmed directly from the problems of moving passengers and freight over the thousands of miles of rail line that covered North America by the 1880s. Since human beings had first begun keeping track of time, they set their clocks to the local movement of the sun.
Gene differences are so important among the population because they the distinctivnes of people
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People behave the way they do because of situation as well as genetics.
<h3>Why people behave the way they do?</h3>
People behave as they do in response to the way they are treated by other people as well as in response to situation. In their behaviour, they have also a genetic factor that influence their behaviour.
So we can conclude that people behave the way they do because of situation as well as genetics.
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Answer:
the grass grew taller and the hawk population declined
Explanation:
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