下列各项中能称为生态系统的是 A.一个学校内所有的学生b.一片森林c.一块农田里的所有生物d.某池塘里的所有的鱼——青夏教育精英家教�—— Template




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tomski下列各项中能称为生态系统的是 a.一个学校内所有的学生b.一片森林c.一块农田里的所有生物d.某池塘里的所有的鱼——青夏教育精英家教�—— coloring