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Human Impact On The Environment
Transcript of Human Impact On The Environment
a resource for food supply
an energy source
a source for recreation
a major source of medicines
natural resources for industrial products
In this respect the diversity of nature not only offers man a vast power of choice for his current needs and desires. It also enhances the role of nature as a source of solutions for the future needs and challenges of mankind. Water pollution
Perhaps the most known examples of a negative human impact on the environment is water pollution. It's obvious we need water to survive but few people realize how much we need and just how much is available. Consider these facts from the United Nations Environment Programme:
Of all the water on Earth, only 2.5% of it is freshwater.
Of that 2.5%, less than 1% is available to us.
Humans each require up to 13 gallons (50 litres) a day of fresh water for drinking, cooking and cleaning. This does NOT take into account the countless gallons of water needed to grow food or care for animals.
70% of all freshwater goes to watering.
According to Organic Farming Research Foundation, only 2% of farms are organic. This means almost 69% of our freshwater supply is being polluted by chemical pesticides, herbicides, and chemical fertilizers, while also compounded with fossil fuels and emissions from heavy farming machinery.
These chemical compounds contribute to acid rain. Since very little can live in an acidic environment, acid rain has harmful effects on plants, animals, and aquatic life, as well as humans and even buildings, statues or other objects. Acid rain also contaminates our limited freshwater supply, and thus the cycle of water pollution continues. However, 127 million people still live in areas that exceed quality standards. And some of the quality standards are far from ideal, such as ozone. The question is: what amount of air pollution is really okay? Shouldn't we be striving for technologies or practices that virtually eliminate major polluters, such as:
Better public transit, electric cars, rail, and city planning etc to replace heavy commutes, fossil fuels, air travel and unwalkable communities. Retrofitting or otherwise upgrading existing factories with greener technologies such as solar panels or air filtration systems. One bit of good news about our human impact on the environment is that air pollution is lowering and air quality is increasing. According to the U.S. Environmental Protection Agency, since 1990 to 2008:
Ozone decreased 14%
Lead decreased 78%
Nitrogen dioxide decreased 35%
Carbon monoxide decreased 68%
Sulfur dioxide decreased 59% Removing animals from factory farms and raising them on natural diets and rotating pasture to reduce methane emissions and pollution. The greatest human impact on the environment we can have is to vote with our pocket book and our actions. By supporting companies that use greener technologies, we can start a trend toward better solutions. By getting involved in community planning and zoning we can have a global impact on a local level. And by buying less "stuff", eating less animal products and sourcing our food from sustainable farms, we can spread the word that better solutions do exist and they don't have to cater to mega-corporations and lobbyist pressure. Air Pollution Conclusion
We have caused a lot pollution to the earth, for this we should stop polluting our planet and start care for it. We have to think that nature is our mother, and we can't live without it. Project created by:
2nd Model Experimental Junior High School of Athens Reference: