海洋污染英文演講稿-在線瀏覽
2024-09-15 20:10本頁面
【正文】 uce the impact on the environment. This sewage marine disposal engineering, pared with the conventional secondary treatment of sewage, saving 1/2 to 1/3 of investment in infrastructure and operation and management costs, covering 30 to 40 percent reduction in benefits are enormous. conclusion Over the years, the Chinese people39。s ocean transportation, The spread of breeding, and soliciting, foreign Marine species39。海洋污染英文演講稿 The lose of living environment 1. enclosing tideland, Marine、coastal project and waterway dredging activities are the causes. thus, the normal activity of Marine life is Seriously interfered, sometimes even make Marine biological habitat pletely extincted. And the decline in the number of mangrove is the best example. overfishing and illeagally trade 2. because a lot of Marine
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