单选题When the sun becomes a red giant, what will conditions be like on Earth?A Its atmosphere will freeze and become solidB It will be enveloped in the expanding surface of the sun.C It will become too hot for life to exist.D It will be nearly destroyed by
题目
单选题
When the sun becomes a red giant, what will conditions be like on Earth?
A
Its atmosphere will freeze and become solid
B
It will be enveloped in the expanding surface of the sun.
C
It will become too hot for life to exist.
D
It will be nearly destroyed by nova explosions.