15 週 ( 5-3 ~ 5-4 ) 5-4 第一小節翻譯

We live on water planet, with a precious film of water-most of it saltwater-covering about 71% of the earth's surface (figure5-19). Thus, a more accurate name for Eather would be Ocean.
我們在水行星居住，與薄薄的一層珍貴水層，它鹽水覆蓋物大約佔地球表面的71%（圖5-19）。 因此，海洋對於地球是一個更加準確的名字。

Although the global ocean is a single and continuous body of water, geographers divide it into four large arears separated by the continents: the Atlantic, Pacific, Arctic, and Indian Oceans. The largest is the Pacific, which contains more than half of the earth's water and covers one-third of the earth's surface.
雖然全球性海洋是唯一的連續水體，地理學者劃分它成大陸分離的四大區域 ： 大西洋，太平洋，北平洋和印度洋。 最大的是太平洋，比地球的一半包含更多的水和覆蓋三分之一的表面。

The aquatic equivalents of biomes are called aquatic life zones. The major types of organisms found in aquatic environments are determined by the water's salinity-the amounts of various salts such as sodium chloride (NaCl) dissolved in a given volume of water. As a result, aquatic life zones are classified into two major types: saltwater or marine (particularly oceans and their accompanying estuaries, coastal wetland, shorelines, coral reefs, and mangrove swamps) and freshwater (particularly lakes, rivers, and inland wetlands). Figure 5-20 shows the distrbution of the word's major oceans, coral reefs, mangroves, lakes, and rivers-another important part of the earth's natural capital.
生物群系水生等值稱水生生活區域。取決於在水生環境裡找到的有機體主要類型；水的鹽度是相當數量的各種鹽，例如氯化鈉（NaCl）被測量的容量在水中溶化了。 結果，水生生活區域被分類成二個主要類型：鹽水或海洋（海洋和特殊他們伴隨的出海口、沿海沼澤地、海岸線、珊瑚礁和美洲紅樹沼澤）和淡水（湖、河和特殊內地沼澤地）。（圖5-20）顯示地球的自然資本分布主要是海洋、珊瑚礁、美洲紅樹、湖和地球的河另一個重要部分。

圖5-19
海水佔71%
97 % 的水，和海洋互相連結
淡水佔地表的1% 以下

圖5-20
珊瑚礁、紅樹林被人類所破壞，漸漸的減少當中。