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On October 21, 2011, the human population reached 7 billion people. If the human population continues to grow at the current rate, there could be as many as 10 billion humans on the planet by the year 2100.

Which of the following statements is NOT a reason for the increase in the human population over this century?


Advances in medicine and medical technology have allowed the death rate worldwide to fall.


Birthrates in developing nations are still well above the ideal replacement fertility rate of 2.1 children/couple.


Developing nations still out number developed nations, and therefore their higher birth rates will help the overall human population to rise.


Migration from less dense areas like Africa and Asia to Europe and North America will increase the population density of the planet.


The Green Revolution has brought about advances in food technology so that more people can be fed per area of arable land.

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