please answer these questions as i need to learn.

please answer these questions as i need to learn. 10. What is Standard time? Why does any country need a standard time? 11. How does the atmosphere act like a blanket? 12. Why are plains more thickly populated?

Q10.)a uniform time for places in approximately the same longitude, established in a country or region by law or custom.The Earth has been divided into 24 time zones of one hour each. Each of these zones covers 15 degrees of longitude. As the local time differs by 4 minutes at every longitude, it would create a lot of confusion regarding time for any country as a whole which may stretch across several longitudes. Therefore each country selects a central meridian and the local time of this meridian is the standard time of that country. Read more on Brainly.in - https://brainly.in/ques
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Q12).because the land is flat and fertile which is good for farming.Building houses,roadways,railways is much easier compared to hilly reasons.
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Q11).Our atmosphere acts as a blanket because: It keeps the average temperature of the earth fairly constant during the day. The atmosphere prevents the sudden increase in temperature during the daylight hours. During the night, it slows down the escape of heat into outer space.
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