背书 发表于 2025-3-26 21:41:48
The Resources of the Ocean,ean and how they can be best managed. A new approach, aquaculture, will allow some fishery products to be harvested similarly to crops on land, thus changing the fisherman from a hunter to a farmer with a substantial increase in efficiency. Other potential resources, such as energy from the ocean, are discussed in Chapter 9.放大 发表于 2025-3-27 04:36:26
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Marine Shipping,from the Middle East, Venezuela, and other areas is of critical importance for the very survival of these energy-dependent economies (Fig. 4-1, Table 4-1). Shipping is the largest item in terms of total ocean dollar expenditures, with close to $100 billion being spent each year by the countries of the world to build, maintain, and repair ships.DNR215 发表于 2025-3-27 11:19:19
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9楼古董 发表于 2025-3-28 14:16:41
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