Question

What is the earth mean temperature? State its one advantage

Answer 1

The average temperature on Earth is about 61 degrees F (16 C). But temperatures vary greatly around the world depending on the time of year, ocean and wind currents and weather conditions. Summers tend to be warmer and winters colder. Also, temperatures tend to be higher near the equator and lower near the poles. 

SIMPLE Answer is

The Earth's mean temperature is 17° C.

Because of that life is possible

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Answer 2

The earth's mean temperate is -46°C to 42°C. The advantage of this temperature is that it allows us to do work smoothly like growing vegetables, and it also helps earth to make its proper rotation within its orbit.