Harmful chemicals such as nitrogen oxide, hydrocarbons, carbon dioxide, and sulfur dioxide are released from motor vehicles, some of which also react with sunlight to produce photochemicals.
Some of these also react with sunlight to produce photochemicals. Harmful chemicals such as nitrogen oxide, hydrocarbons, carbon dioxide, and sulfur dioxide are released from motor vehicles.
Harmful chemicals such as nitrogen oxide, hydrocarbons, carbon dioxide, and sulfur dioxide are released from motor vehicles. Some of these also react with sunlight to produce photochemicals.
Harmful chemicals such as nitrogen oxide, hydrocarbons, carbon dioxide, and sulfur dioxide are released from motor vehicles. Some of these also react with sunlight to produce photochemicals.