The chart below shows the Nationwide average price of gasoline over the last year (12 months) compared to the gas price in Dallas and the price in Los Angeles.You can change the time period to see anywhere from 1 month to 6 years. Simply select the time period you wish to see from the list at the top.he chart below shows the Nationwide average price of gasoline over the last year (12 months) compared to the gas price in Dallas and the price in Los Angeles.
Causes Of The Greenhouse Effect. Trace gases in the atmosphere cause the greenhouse effect by acting like a blanket on a global scale and slowing the radiation of heat back out into space.mpacts of Different Greenhouse Gases. Carbon dioxide is the largest contributor to global warming, and occurs in relatively high concentrations. On the other hand, methane occurs in low concentrations, but it has a much higher heat-trapping capacity than carbon dioxide per unit volume.
Global warming causes by greenhouse effect. Greenhouse gases in the atmosphere (see above) act like a mirror and reflect back to the Earth a part of the heat radiation, which would otherwise be lost to space.he increase of greenhouse gas concentration (mainly carbon dioxide) led to a substantial warming of the earth and the sea, called global warming. In other words: The increase in the man-made emission of greenhouse gases is the cause for global warming. For the effects of global warming see below.