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These ordiances gave the federeal government the right to manage unsetteled lands.
This was importantant because it helped raise moeny by selling parts of land. Source:
Book -
Is a conservation law in the United States that prohibits trade in wildlife, fish, and plants that have been illegally taken, possessed, transported or sold.
This law is important because without it we would have lots of illigal animals sold throughout the world.
Still active.
http://en.wikipedia.org/wiki/Lacey_Act_of_1900 -
This law gives the President of the United States the authority to, by presidential proclamation, restrict the use of particular public land owned by the federal government.
This is important because without this law the government would own no land.
Still active.
http://en.wikipedia.org/wiki/Antiquities_Act -
The Clean Air Act is a United States federal law designed to control air pollution on a national level
This law is crutial because without it, our air would be completly poluted and humans would have much more lung problems.
Still active
http://en.wikipedia.org/wiki/Clean_Air_Act_(United_States) -
Regulating noise pollution with the intent of protecting human health and minimizing annoyance of noise to the general public.
This act is important because it helps minamize the sounds of almost every aircraft and motor vehicle.
Not repealed.
http://en.wikipedia.org/wiki/Noise_Control_Act -
Is to restore and maintain the chemical, physical, and biological integrity of the nation's waters by preventing point and nonpoint pollution sources
This act is very important because it help us keep most fresh and salt water clear and sanitary.
Still active.
http://en.wikipedia.org/wiki/Clean_Water_Act -
It was designed to protect critically imperiled species from extinction.
This was one of the many laws passed in 1973.
This law is very important because without it many endangered species could be extinct.
Still active.
http://en.wikipedia.org/wiki/Endangered_Species_Act -
That regulates the introduction of new or already existing chemicals.
This might be the most important act becuase without it we could of had millions of deaths from deadly chemicals.
Still active.
http://en.wikipedia.org/wiki/Land_Ordinance_of_1785 -
NEPA contains a Declaration of National Environmental Policy which requires the federal government to use all means to create and maintain conditions under which man and nature can exist in productive harmony.
This law is important becuse it holds all other acts together.
The act was not repealed. http://www.epa.gov/compliance/basics/nepa.html -
The act, described by proponents as an attempt to combat growing energy problems, changed US energy policy by providing tax incentives and loan guarantees for energy production of various types.
This law is important because it took place of the Public Utility
Holding Company Act of 1935, it wsa repealed in 2006.
http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005
http://en.wikipedia.org/wiki/Energy_Policy_Act_of_2005