What would Earth's average surface temperature be if it had no greenhouse effect?

A) below the freezing point of water
B) slightly above the freezing point of water
C) about 10°C
D) the same temperature as it is with the greenhouse effect
E) slightly warmer than it is with the greenhouse effect


A) below the freezing point of water

Physics & Space Science

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Three joggers are running along straight lines as follows: Jogger A, with a mass of 55.2 kg, is traveling along the line y = 6.00 m at 3.45 m/s in the positive x-direction

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He discovered that the orbits of planets are ellipses

A) Kepler B) Ptolemy C) Galileo D) Tycho Brahe E) Copernicus

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