What are the major steps being taken to reduce emissions from passenger vehicles? What are the CAFE standards, and how are they changing?
What will be an ideal response?
The use of catalytic converters in cars has reduced emissions dramatically. In addition, new cars sold in 1994 were required to emit 30% less VOCs and 60% less nitrogen oxides. In 1992, oxygen began to be added to gasoline to reduce carbon monoxide emissions. After 1990, inspections began to be required for measuring emissions. Finally, CAFE standards have set fuel economy standards for motor vehicles.
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Which of the following materials is most likely to undergo oxidation?
A. Na B. Na+ C. Cl2 D. Cl- E. both A and B
Consider the following processes: respiration, combustion, polymerization, nitrification, industrial fixation, and photosynthesis. How many of these result in the release of oxygen into the atmosphere?
A) all B) 4 C) 2 D) 1 E) none
In reality, biomes
a. are not uniform but consist of a mosaic of patches each with somewhat different biological communities b. are not uniform but consist of a mosaic of patches, each with the same biological communities c. are very uniform, but can have normal variations in temperatures from one region to another d. are very uniform in order to resist environmental disruptions e. are very diverse in order to resist environmental disruptions to the sameness of all communities in the biome
The Cascade Range is principally formed by uplift associated with tectonic forces caused by the
collision of North America and Eurasia. Indicate whether the statement is true or false.