本题目来源于试卷: SL Topic C4.1 Populations and communities，类别为 IB生物学
[问答题]
a. Explain why the nests can36(yvuem;d t d -68zkfwif 1pp be counted b*lu k .c5.pccktt: ,slf 4*2wtg9nw gby direct count but the ant population of a co9nck,:wb pc25t uc.t g*fll*4sw.gtk lony must be estimated.
参考答案: The nests are large and easily counted.
The nests that have been counted can be marked.
The ant population is too large to be counted directly.
Ants are moving most of the time, making it difficult to identify animals already counted.
本题详细解析:
暂无
| 
