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營養鹽是海洋植物繁殖生長不可缺少的化學成分，而最重要的營養鹽種類分別為氮、磷、矽及微量金屬，特別是鐵。在赤道太平洋以及南北半球緯度45度以上的海水，會有較高的營養鹽，是什麼原因讓這兩個地方有較高的營養鹽呢？
#海洋科學 #地理 #自然 #氣候
分級:
片長:
發音:
發行:
導演:
分級: 普遍級
片長: 3 min
發音: 華語
發行: 2018-06
導演: 安偉民
片長: 13 min
發行: 2019-06
導演: 高逸峰
片長: 4 min
片長: 11 min
發行: 2019-01
發行: 2018-01
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