水作为类地球环境中生命所需最好的溶剂 Ice is lighter than liquid water.The ice cover acts as insulator that prevents the complete freezing of a body of water from the bottom to the top. High surface tension.Organic compounds may be concentrated in small water droplets which enhanced 10 20 30 。zone(DUkm reactions. Water dissociated by UV produced O,which may turn to ozone.Ozone is an excellent absorber for UV. shielding the planetary surface. Water,H and O are widely used in biomolecules. Water is abundant on Earth (We got a ocean of water!).Ice is lighter than liquid water. The ice cover acts as insulator that prevents the complete freezing of a body of water from the bottom to the top. High surface tension. Organic compounds may be concentrated in small water droplets which enhanced reactions. Water dissociated by UV produced O2 which may turn to ozone. Ozone is an excellent absorber for UV, shielding the planetary surface. Water, H and O are widely used in biomolecules. Water is abundant on Earth (We got a ocean of water!). N NH2 N O O O H H H H H O P O - HO O - 水作为类地球环境中生命所需最好的溶剂