The widespread dependency on this single crop, and the lack of genetic variability among the potato plants in Ireland and Europe (a monoculture), were two of the reasons why the emergence of "Phytophthora infestans" had such devastating effects in Ireland and in similar areas of Europe.
The lack of genetic variability among the potato plants in Ireland caused the emergence of "Phytophthora infestans" which had devastating effects in Ireland.
The lack of genetic variability among the potato plants in Ireland caused the emergence of "Phytophthora infestans" which had devastating effects in Ireland.
为简单起见重写这句话: The widespread dependency on this single crop, and the lack of genetic variability among the potato plants in Ireland and Europe (a monoculture), were two of the reasons why the emergence of "Phytophthora infestans" had such devastating effects in Ireland and in similar areas of Europe. 输出: