听写
发表于 2025-3-26 22:24:00
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金丝雀
发表于 2025-3-27 04:32:14
Fisheries, in catches. Unfortunately, this led to widespread overfishing and eventually to the collapse of many fish stocks. Figures from the United Nations Food and Agricultural Organisation show that, despite further advances in fishing technologies, global catches have declined slowly since the late 1980s.
骨
发表于 2025-3-27 08:02:36
Aquaculture,test-growing animal food sector in the world. Today, aquaculture supplies an estimated 43% of all fish that is consumed by humans globally..Species that dominate world aquaculture are those at the lower end of the food chain, that is, aquatic plants, shellfish, herbivorous fish (plant-eating) and om
确定方向
发表于 2025-3-27 12:00:54
Pollution,stances. This can result in the contamination of the marine environment with substances that have a deleterious effect on marine life. This chapter selects and discusses some pollutants that are currently of concern in the marine environment.
走路左晃右晃
发表于 2025-3-27 14:18:27
Marine Reserves,agement, are now urgently needed to help restore and protect ocean biodiversity. Marine reserves are increasingly being proposed by scientists and policy-makers as a tool for the conservation and management of the oceans. Fully protected marine reserves protect entire areas from harmful human activi
山顶可休息
发表于 2025-3-27 19:29:34
Book 2009ns is incre- ingly coming under serious threat from many human activities including overfi- ing, use of destructive fishing methods, pollution and commercial aquaculture. In addition, climate change is already having an impact on some marine ecosystems. This book discusses some of the major threats
Slit-Lamp
发表于 2025-3-28 01:26:54
of threats from human activities facing the marine environmThe world’s oceans cover 70% of the earth’s surface and are home to a myriad of amazing and beautiful creatures. However, the biodiversity of the oceans is incre- ingly coming under serious threat from many human activities including overfi
Biguanides
发表于 2025-3-28 04:56:03
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