Answer to Question 1
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.
Answer to Question 2
See Figure 8-23 for an explanation of the demographic transition with examples of countries currently going through each phase (Afghanistan, Uganda, Zambia, Ghana, Guatemala, Iraq, India, Gabon, Malaysia, Brazil, Germany, and Japan).
The transition between steps usually occurs at a temperature that would not interfere with cold ...
Attributes of Major Energy Channels According to Traditional Chinese Medicine
The per capita emissions of the developed world
Basic Steps of Hemostasis
Major Structures of the Human Brain
How does PCA reduce the dimension of a statistical problem? How do you select the reduced ...