Explain why acid rain, smog, ocean acidification, and global warming are indirect results of air pollution.

Answer:

In all of these cases the impact of air pollution is not directly related to the toxicity of the gases. Acid rain and ocean acidification occur when pollutant gases react in the environment to form acid. Smog impacts the environment by filtering out sunlight and leaving less available for plants to use. Global warming occurs because greenhouse gases cause earth to retain more of the heat it collects from the sun.