Diary of a rail fan in Kansai,Japan(Ver.2)

About world's rail news, general news, my train pictures, and travel diary)

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This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License. クリエイティブ・コモンズ 表示 - 非営利 - 改変禁止 4.0 国際 ライセンスの下に提供されています。

List of my travel diary My train photoes The other contents

Entries from 2020-11-21 to 1 day

Why do we have to pay attention to captive breeding?

edition.cnn.comIt's extremely difficult to find out factors affecting an ecosystem. If a kind of species is confronting extinction, it is difficult for us to clarify whether or not economic activities of human beings affected the ecosystem…