A) is in the form of a pyramid.
B) is characterized by a large percentage of the population in the post-reproductive years.
C) has a very broad base showing a large number of young.
D) has about equal distribution between all age groups.
E) is in the form of a pyramid and has a very broad base showing a large number of young.

A) an intrinsic limiting factor.
B) exponential growth.
C) saturation.
D) zero population growth.
E) geometric growth.

A) size.
B) age.
C) structure.
D) density.
E) all of these.