Question

in an age structure diagram, if there are more older individuals than younger ones, what population trend does it suggest? stable population rapid population growth declining population no significant trend can be inferred

Explanation:

An age - structure diagram shows the distribution of different age groups in a population. When there are more older individuals than younger ones, the number of individuals entering the reproductive and working - age groups (from the younger cohort) will be less than the number of individuals leaving these groups (as the older cohort ages and eventually dies). Over time, the overall population size will decrease because there are not enough new individuals to replace the ones that are aging and dying. A stable population would have a more balanced age structure across different age groups. Rapid population growth occurs when there is a large proportion of younger individuals (a pyramid - shaped age - structure diagram) as these young individuals will enter the reproductive age and have offspring, increasing the population. And we can infer a trend from the age - structure diagram, so the option of no significant trend is incorrect.

Answer:

C. declining population