池塘编号 | 1 | 2 | 3 | 4 | |
捕食者数量/只 | 0 | 2 | 4 | 8 | |
鱼存活率/% | 甲 | 87 | 58 | 42 | 20 |
乙 | 7 | 30 | 32 | 37 | |
丙 | 40 | 25 | 11 | 10 |