Envrionmental Science

The current worldwide estimated human population at this take aim in snip is 6,798,328,762 people (U.S. Census Bureau, 2009). This number forever changes due the birth or reproduction of human life. some other contributing factor to human population changes is the death rate. spirit to a greater extent than closely at what sparks birth and death rate to change, we find that different eras or historical events lead to changes in the human population. One event that generated whacking a large death toll was the Black Plague (Lewis, 2004). A more recent event that could potentially spark a slump in population would be the Pandemic Flu. An example of a historical event that contributes to increases in human population is the industrial Revolution. The industrial revolution created a higher get hold of on products and services which called for families to expand in order to cover the needs.
other example is the creation of medications that cured illnesses that were considered incurable in ultimo years. One such medication is the antibiotic. When the antibiotic was invented, it cured ailments and illnesses that had at one time been considered terminal. It also prolonged the life of many another(prenominal) individuals, which ultimately led to less death. Other contributions included enhancements to sanitation, and husbandry (Lewis, 2004).



These enhancements helped by preventing infection and increasing the health of the population. Both of these enhancements support in increasing the lifespan of humans. The human population offshoot issue will continue to impact the ecosystem because of the increased demand that will be placed on natural resources and animals. The more humans inhabiting the earth, the more demand there will be for water, land, and animals for survival. If humans do not ration their consumption in the growth process, the natural resources will not have time to replenish themselves.
Lewis ,K., 2004. NOVA world in the balance. human numbers through and through time. Retrieved November 20, 2009
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