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 trilobite body is divided into three major sections
Pill organizers can help reduce confusion and ensure that medications are taken at the appropriate ...
Major Digestive Enzymes
Projections of global temperature depend heavily on the level of future greenhouse gas emissions
Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v
Major RNA Molecules