Q. What does the shape of the given age pyramids reflects about the growth status of the related population?
image
(i) (ii)
(a) Expanding Stable
(b) Stable Declining
(c) Expanding Declining
(d) Declining Stable

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Solution:

Triangular age pyramid has high proportion of prereproductive individuals, moderate number of reproductive individuals and fewer post-reproductive individuals. It represents young or rapidly growing population. In urn-shaped age pyramid, the number of reproductive individuals is higher than the number of pre-reproductive individuals. It represents declining or diminishing population with negative growth.