2. 职称英语
  3. Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate

Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate

游客2023-09-03  32
问题 Populations have 3 agents, namely, a birth rate, a death rate, and a growth rate. [br] The major agents of population growth are births and deaths.
选项 A、Y
B、N
C、NG
答案 B
解析 参见文章第2句：The major agent of population growth is births，and the major agent of population loss is deaths．
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