overpopulation
TRANSCRIPT
OverpopulationGroup ?
OVERPOPULATION
0From 1800 to 1930 the worlds population doubled from 1 to 2 billion, and then doubled again by 1975. In October 2011, it surpassed 7 billion. This increase is overwhelming the planet’s limited resources.
0Species abundant in the world have been wiped out by growing human numbers.
OVERPOPULATION
0As the population grows rapidly, so does the demand for water, land, trees and fossil fuels.
0All of which come from endangered plants and animals. Species are disappearing about 1,000 times faster. This time, though, it isn’t because of geologic or cosmic forces but unsustainable human population growth.
OVERPOPULATION
0Today’s global human population is over 7 billion. Every day, the planet sees a net gain of roughly 250,000 people. If the pace continues, we’ll be on course to reach 8 billion by 2020 and 9 billion by 2050.
Prevention
0There are only two ways to decrease or slow population growth. You decrease the birth rate or increase the death rate.
0Problem is - biological organisms are programmed to reproduce and someone (the government)must either make it advantageous for them not to reproduce and provide the means to prevent birth or force them through drastic methods not to have children.
Prevention
0If you look at what happens to other species when their populations increase geometrically as the human population has done over the last 100+ years they tend to crash because they have depleted a food source or the environment has changed to decrease the food source.
Today
0Today humans rely heavily on oil and coal not only for their economy but also for their food production. The manufacture of fertilizers as well as modern farming and distribution require a lot of energy. Oil is a limited resource. Coal is a possibility but will require re investment. It also. like oil increases CO2 levels which are thought to create global warming and climate change.
Thank you for listening!
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