| environ. |
sea water Aqueous solution of salts in more or less constant ratio, whose composition depends on several factors among which predominate living organisms, detrital sedimentation and the related chemical reactions. Sea-water accounts for more than 98% of the mass of the hydrosphere and covers just over 70% of the globe. Because of the composition and stability of the oceans, and the way they are controlled, they are of great importance to the climate, and great attention has been given to studying the effects of pollution. Man's activities are believed to be accelerating the change in the composition of sea-water (以多少的固定比例溶解盐的溶剂，它的组成依赖于几个因素，主要的包括生物、沉积碎屑和相关化学反应。海水有98%的水并覆盖全球70%。因为海洋的组成和稳定性和它们被控制的方式，它们对气候非常重要。人们对海水污染的研究很重视。人们的活动被认为加速了海水组成的变化。) |
