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biodiversity, sustainability, and the demographic transition

1. The population profiles for developed and developing countries are fundamentally different. What are the differences?

Define the epidemiological transition and the fertility transition and relate them to the four phases of the demographic transition.

Different regions of the world are in different phases of the demographic transition. What are the consequences of remaining at earlier transition phases?

List four natural resources that are needed for survival. Next, list five things that might happen if the number of people in a family, village, country is increased but the quantity of resources remains constant.

2.What is biodiversity and how are humans impacting it? Is maintaining biodiversity essential for human sustainability?

What can be done to maintain today's current biodiversity levels?

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1) The shape of age / population pyramids is indeed much different for developing vs developed nations. These shapes can easily be seen at places like

Just choose a nation like Somalia or Bangladesh versus the USA or Canada and note the shapes of the general trend. High birth rates make a wide base, and as this rate decreases, so does the slope of the line approach vertical. In point of fact, when birth rates are less than zero, the base will become narrower.

[For comprehensive statistics on most all nations go to]

The real query here though is "why"? Why indeed.....why do poorer/developing nations have a greater fecundity per capita than richer nations? Partly this is due to what is culturally perceived a types of capital. Labor capital in a nation where goods are directly derived from personal (family) labor have historically created a need for larger families. In developed nations, this is not the case as for the most part group labor by family units is no longer an extant value with respect to labor capital.

Re: the demographic shifts. I would point towards this PDF article (downloadable)

For a more succinct (one-pager) with graphics, point to

An excellent reference to the epidemiologic transition and its relations to population ...

Solution Summary

Solution includes HTML & PDF versions with live links. Deals with biodiversity, sustainability, bioethics, and the demographic transition