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引用第14樓waynewong於2009-11-01 19:50發表的 :BIO都會教的
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引用第5樓4505於2009-11-01 18:57發表的 :可以咁講,水入面有大部分係CO2
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引用第28樓匿名於2009-11-01 22:00發表的 : 証據?
引用第32樓匿名於2009-11-01 22:11發表的 :Water (H2O, HOH) is the most abundant molecule on Earth's surface, constituting about 70% of the planet's surface. In nature it exists in liquid, solid, and gaseous states. It is in dynamic equilibrium between the liquid and gas states at standard temperature and pressure. At room temperature, it is a nearly colorless with a hint of blue, tasteless, and odorless liquid. Many substances dissolve in water and it is commonly referred to as the universal solvent. Because of this, water in nature and in use is rarely pure and some of its properties may vary slightly from those of the pure substance. However, there are many compounds that are essentially, if not completely, insoluble in water. Water is the only common substance found naturally in all three common states of matter—for other substances, see Chemical properties. Water is essential for life on Earth.Water usually makes up 55% to 78% of the human body.地球有水既地方係=].......
引用第33樓匿名於2009-11-01 22:14發表的 :CO2?
引用第34樓匿名於2009-11-01 22:15發表的 :你是文盲?他問H2O你又說什麼CO2
引用第35樓匿名於2009-11-01 22:31發表的 :做咩咁多匿名架- -
引用第37樓匿名於2009-11-01 23:03發表的 :呀623朋友呀我引用緊一個人你睇唔睇到?佢問我拎証明.......
引用第36樓匿名於2009-11-01 22:34發表的 :睇你個樣係匿名no.3I'M 匿名NO.4