Human Population

Running head : Human Population

Human Population

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Introduction

Census Bureau of the United States has estimated that the current world human population is about 6 ,818 ,500 ,000 people . In 2009 the United Nation estimated the world human population to be around 6 ,800 ,000 ,000 This is an indicator that the human population is growing at a very alarming rate with an annual birth rate of approximately 134 million per year against 57 million deaths (Freeman . 1974

The alarming increment in

the number of human on earth has raised queries as to whether the planet earth is becoming over populated . The human population is experiencing scarcity of resources due to the overpopulation . In to them to counter this problem they have come up with ways that have in turn threatened the ecosystem . For instance there planet earth is warming up , the air is being populated , and the levels of atmospheric carbon dioxide have risen (Freeman . 1974

It is estimated America enjoyed a low population of less than 100 million in the years 1950s . During this period there was a series of epidemics that were believed to have been introduced by their encounter with the explorers from Europe leading high death rates . Evidences provided by archaeologists indicated that most deaths of the current world were cause by diseases by the old world such as influenza smallpox , and measles . However , with time the natives developed immunity towards these diseases (Collinson . 2002

The life expectancy for children...