问题补充：
Why the water is the origin of life on earth?
答案：
Because,on the one hand,the evolution of life on the earth began in the water,and on the other hand,water is the major component of living beings and every life needs water to stay alive.
======以下答案可供参考======
供参考答案1:
Because without it,many lives can live any longer.
供参考答案2:
为什么说水是生命之源？
供参考答案3:
为什么水是地球上的生命之源？
