原题
In recent years, the search for extraterrestrial organisms has increasingly focused on water as an important clue. On Earth, water supports biological processes, and its detection on ice-covered moons such as Europa and Enceladus has attracted scien attention. Evid suggests th these i moons con oceans ke liquid b tidal hea, a pro in wh gravitational forces generated by nearby planets produce internal warmth. This energy source may create environments comparable to Earth's deep-sea hydrothermal regions, where biological activity occurs without sunlight.
参考答案：tific ence at cy tain pt y ting cess ich
解题思路
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