如題, 老師好像有說過是人類 ---++ (以下是我翻筆記看到的, 不知道有沒有抄錯..第8題有找一些資料) 2. 為甚麼魚躍龍門是大魚而不是小魚? 因為大魚的metabolic rate較高, 耗氧量較高, 比小魚較不耐缺氧, 所以水中缺氧時, 大魚先跳出水面, (希望跳至含氧較高的水中。) 7. 鰻魚需要溯河回到生長地, 此時河川正受到污染, 鰻魚會如何? 可能會爬上岸... 8. 為甚麼很多生物都選在夜晚孵化? Dispersal is an important feature in the life history of almost all organisms. Clearly everything from juvenile fish to juvenile trees cannot simply pile up at the location of their parents. All young must disperse and find their own piece of habitat and avoid competing with its parents. Through natural selection, many organisms tailor the dispersal stage and other stages of their early life history to suit them and their environments. -- 　　　　　　　　蝸牛牽我散步 　　　　　　我看見牽牛花 　 --

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