Question

Populations whose age structure diagrams are narrower at the bottom than at the top have:

a) high death rates.
b) the same proportion of individuals in each age group.
c) a declining population.
d) a high growth rate.
e) all of the above

Answer 1

Populations with age structure diagrams narrower at the bottom indicate a declining population.

Step-by-step explanation:

Populations whose age structure diagrams are narrower at the bottom than at the top indicate a declining population. This can be seen in stage 4 of the age structure diagrams, where the number of individuals decreases rapidly with age.

In other words, in a declining population, there is a high proportion of older individuals and few young individuals. This can result from high death rates, as well as a lower birth rate.

Therefore, the correct answer is c) a declining population.