Which law sets emissions standards for vehicles in the United States? Discuss whether states are allowed to enact more stringent requirements than the federal standards and why they would do it
What will be an ideal response?
The Motor Vehicle Air Pollution Control Act of 1965 set emissions standards for vehicles in the United States. Individual states are allowed to enact more stringent requirements than the federal standards depending upon the levels of pollution in each state. The most stringent vehicle air pollution standards are in California and Colorado because the major cities in these two states experience inversion layers in the atmosphere where the air pollution settle into the valleys where the major cities are located and the air pollution remains for long periods of time.
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The vertical curved section of a handrail or guardrail is called a(n) _____.
a. upturn b. gooseneck c. radius d. swan's head
What form of gasoline is the most dangerous, liquid or vapor? (Circle one.)
What will be an ideal response?
What is a clan or colony structure? Describe the advantages of such a structure
What will be an ideal response?
Gypsum plus irrigation reduces the pH of sodic soils by replacing sodium from the exchange complex and removing it from the soil
Indicate whether the statement is true or false