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Ecology and Population Growth
University of Phoenix
Natasha Griffin
SCI/230/Christine Rogers
February 10, 2012

What is the current estimate of the worldwide human population at this moment? Describe how this number is changing moment-to-moment, day-to-day, and from one year to the next.
According to the U.S. Census Bureau (2006), the current human population worldwide is “6,783,673,491 as of June 1, 2009 8:50 a.m.” In the 1960’s the population was growing at a staggering rate as a result of new medicinal resources, as well agricultural development (Nova, n.d.). The population grew to around three billion people. In just 14 years the population grew by another one million people. Recently the trend in population growth has been increasing by one billion people every year. According to Nova (n.d.), “Over the next half century, our numbers will increase again, likely to a staggering nine billion people”.
Describe how the human population growth issue has and will impact the ecosystem.
Looking at the graph it seems as if the rate of human’s growth is decreasing dramatically.

Figure 1 World Population Growth Rates: 1950-2050
Source: U.S. Census Bureau, 2006.
The reason for the dramatic decrease in the world population is in part an effect of natural disasters (U.S. Census Burearu, 2006).
Currently the human population is straining the use of our natural resources. Americans use the highest numbers in comparison to Europeans (Nova Global Trends Quiz, n.d.). Humans affect water usage, which will dramatically decrease our supply over the next half a century. We do have the resources to help minimize the pressure we put on our ecosystem.


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