I just took the test the answer is D-Deposition
Letter D because Mongolia in general has a lot lower populations.
The answer should be ''The law of the conservation of energy''.
Yes this is the right answer for this question
The seasons are caused as the earth tilted on it's axis, travels in a loop around the sun each year.Summer happens in the hemisphere tilted towards the sun, and winter happen's in the hemisphere tilted away from the sun.
