2. 外语
  3. Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate. Certain insects, such as the monarch butterfl

Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate. Certain insects, such as the monarch butterfl

admin2012-11-30  60
问题 Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate.
Certain insects, such as the monarch butterfly, can incorporate poisonous substances found in food plants into their own tissues and use them as ______.
选项
答案a defense against predators
解析 参见小标题4．Coevolution下面第6句：Certain insects，such as the monarch butterfly，can incorporate poisonous substances found in food plants into their own tissues and use them as a defense against predators．
转载请注明原文地址:https://kaotiyun.com/show/p8b7777K
0

大学英语六级

相关试题推荐
随机试题
最新回复(0)