TRANSPORTATION AND GLOBAL WARMING. Because of its near-total dependence on petroleum fuels, the U.S. transportation sector is responsible for about a third of our countryâs climate-changing emissions. Globally, about 15 percent of manmade carbon dioxide comes from cars, trucks, airplanes, ships and other vehicles. Reducing transportation emissions is one of the most vital steps in fighting global warming â and solutions to the transportation problem are already available.
spectro-. 1. a combining form representing spectrum, in compound words: spectrometer. British Dictionary definitions for spectro-. spectro-. combining form.
Best Answer: A spectrophotometer is a photometer (a device for measuring light intensity) that can measure intensity as a function of the light source wavelength. Important features of spectrophotometers are spectral bandwidth and linear range of absorption or reflectance measurement.