Polymers, including natural proteins (such as DNA) and artificial materials (such as nylon and polyester), are examples of macromolecules. materials scientist Someone who studies the ways in which the atomic and molecular structure of a material relates to its overall properties.
Emission standards for engines and vehicles, including emission standards for greenhouse gas (GHG) emissions, are established by the US Environmental Protection Agency (EPA).The EPA authority to regulate engine emissionsâand the air quality in generalâis based on the Clean Air Act (CAA), most recently amended in 1990.ther states have a choice to either implement the federal emission standards, or else to adopt California requirements (CAA section 177).
Best Answer: Yep, the state of California has the strictest requirements on emissions in the country, so If you register a car in that state it has to meet or exceed those standards.For a 2002 vehicle it means very little because cars that new are pretty much all built the same.However if you were driving a 1982 buick or something, a non-compliant car may have a bit more power, but may be puffing out a lot more pollutates than the same car that is compliant.Source(s):or a 2002 vehicle it means very little because cars that new are pretty much all built the same. However if you were driving a 1982 buick or something, a non-compliant car may have a bit more power, but may be puffing out a lot more pollutates than the same car that is compliant. Source(s):