The table shows data about the percentage of people who commute to work per form of transport and the average ages of commuters, and the bar chart illustrates CO2 pollution from each type of transportation in Houston, Texas. As we can see, most people commute to work alone by car, and this is the method that emits the most carbon dioxide.
According to the table, private cars used by one person is the most common among all groups, which is 48 percent, and the average age of these commuters is 43 years old. This is followed by trains and buses, which are the second largest share, at37 percent. The average age of these commuters is 47 , which is the oldest average. Finally, cycling and walking is the least popular, with just 4 percent of people using this mode.
As the chart shows, the most carbon dioxide is emitted by cars with just one driver, and these emit more than 0.3 kilograms per kilometer. Next is four people using a car together, which emits less than 0.1 kilograms. On the other hand, cycling and walking do not have carbon dioxide emissions.