Q742
Without the atmospheric greenhouse effect, the average surface temperature would be:
A.
Higher than at present
B.
Lower than at present
AnswerC.
The same as it is now
D.
Much more variable than it is now
Answer: Option B
Solution
Answer: Option B
Solution:
Without this greenhouse effect, the average surface temperature would be 255 degrees kelvin (-18 degrees Celsius or 0 degrees Fahrenheit); a temperature so low that all water on Earth would freeze, the oceans would turn into ice and life, as we know it, would not exist.