生态瓶4天内的变化情况在洗净的大可乐瓶中,注入约三分之二容积的纯净水,加入沙子少量(积在低部约2厘米厚)然后放入1~2只小田螺,3条小虾.3条小鱼,水草数根,拧紧瓶盖将瓶子横置,搁在架
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/08 16:48:24
![生态瓶4天内的变化情况在洗净的大可乐瓶中,注入约三分之二容积的纯净水,加入沙子少量(积在低部约2厘米厚)然后放入1~2只小田螺,3条小虾.3条小鱼,水草数根,拧紧瓶盖将瓶子横置,搁在架](/uploads/image/z/9979141-13-1.jpg?t=%E7%94%9F%E6%80%81%E7%93%B64%E5%A4%A9%E5%86%85%E7%9A%84%E5%8F%98%E5%8C%96%E6%83%85%E5%86%B5%E5%9C%A8%E6%B4%97%E5%87%80%E7%9A%84%E5%A4%A7%E5%8F%AF%E4%B9%90%E7%93%B6%E4%B8%AD%2C%E6%B3%A8%E5%85%A5%E7%BA%A6%E4%B8%89%E5%88%86%E4%B9%8B%E4%BA%8C%E5%AE%B9%E7%A7%AF%E7%9A%84%E7%BA%AF%E5%87%80%E6%B0%B4%2C%E5%8A%A0%E5%85%A5%E6%B2%99%E5%AD%90%E5%B0%91%E9%87%8F%EF%BC%88%E7%A7%AF%E5%9C%A8%E4%BD%8E%E9%83%A8%E7%BA%A62%E5%8E%98%E7%B1%B3%E5%8E%9A%EF%BC%89%E7%84%B6%E5%90%8E%E6%94%BE%E5%85%A51%7E2%E5%8F%AA%E5%B0%8F%E7%94%B0%E8%9E%BA%2C3%E6%9D%A1%E5%B0%8F%E8%99%BE.3%E6%9D%A1%E5%B0%8F%E9%B1%BC%2C%E6%B0%B4%E8%8D%89%E6%95%B0%E6%A0%B9%2C%E6%8B%A7%E7%B4%A7%E7%93%B6%E7%9B%96%E5%B0%86%E7%93%B6%E5%AD%90%E6%A8%AA%E7%BD%AE%2C%E6%90%81%E5%9C%A8%E6%9E%B6)
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