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1题目图2表示出生率、死亡率和种群密度的关系,据此分析得出的正确表述是()A.在K/2时控制有害动物最有效B.图示规律可作为控制人口增长的依据C.该图可用于实践中估
1 Problem Figure 2 shows the relationship between birth rate, mortality and population density. The correct analysis based on this analysis is () A. The most effective control of pests at K / 2 B. The graphic law can be used as the basis for population growth control C. This figure can be used in practice