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humans impact on environment
Transcript of humans impact on environment
humans impact on environment
LAWS & REGULATIONS
ENVIRONMENTAL PROTECTION Agency(S)
LAWS FOR NATURE
CLEAN AIR ACT
CLEAN WATER ACT
Clean Water Act was signed in 1970
-only 37% of lakes and waterways in U.S were safe to swim in during 1970
-percentages doubled by 1972
-people cleaned water
-less pollution in water was found
ENDANGERED SPECIES ACT
-practice in which natural resources are used and managed in a way that meets current needs without hurting future generations.
There are certain benefits that come to an ecosystem with the protection of an umbrella species
- ecosystem becomes less polluted
-more food is available for animals
-humans are keeping ecosystem safe
causes adverse change
one of the biggest global killers
affects over 100 million people
recycling and composting
is a certain species that has been enlisted as an endangered species in its ecosystem
In the timber industry, old forests are being lost at a fast rate due to method called "clear cutting." Today with the raised awareness of forest ecosystem, companies are choosing to cut selected trees rather than clear-cutting forests.
Overfishing has depleted fish populations worldwide. Fishing bans in certain areas helps to replenish poputions within that area, which may lead to greater fish numbers.
agency of the United States federal government that manages all U.S. national parks, many American national monuments, and other conservation and historical properties with various title designations.
NATIONAL PARK service
they were created to balance the recreation for visitors with the protection of the natural ecosystem.
Clean Air Act was signed in 1970
-increased air quality throughout the U.S.
-regulates emissions from industrial factories to automobiles
agency of the U.S. government that sets and enforces national pollution-control standards.
14 billion pounds of garbage are dumped into the ocean every year
its creation paved the way for the development of policies & regulations to protect the environment across the United States.
Endangered species threaten an ecosystem's biodiversity
Loss of biodiversity makes an ecosystem unstable
-other animals have to adapt to change
-can lead to other species endangerment or extinction
-loss of prey can occur
-ecosystem change occurs
a gradual increase in the overall temperature of the earth's atmosphere generally attributed to the greenhouse effect caused by increased levels of carbon dioxide, chlorofluorocarbons, and other pollutants.
STORMS & FLOODS
YOSEMITE NATIONAL PARK
Each year 1.2 trillion gallons of untreated sewage, storm water, and industrial waste are dumped into U.S. water
More then 1,300 U.S. plants and animals have already been federally listed as threatened/endangered and have been protected under the ESA.
The Endangered Species Act was passed in 1973
-Endangered species: species that are likely to become extinct
-Threatened species: species that are likely to become endangered in the future
-Critical habitat: vital to the survival of endangered or threatened species
Protects or "lists" both plants and animals (nationally and worldwide)
use laws/acts, policies and regulations to protect environment
-Clean Air Act
-Clean Water Act
-Endangered Species Act
enforce laws and agreements that protect animals and habitats
-make sure they are properly managed and conserved
set aside areas as public land
DESTRUCTION OF ECOSYSTEMS