Point 1: Why I choose acid rain: I chose acid rain for my project because I wanted to better understand how acid rain becomes acid and why it is such a big problem for nature. Point 2: What causes acid rain: Acid rain is caused by sulfur dioxide and nitrogen oxides. Gases are mainly produced by the combustion of fossil fuels such as coal or natural gas. In the United States, 2/3 of all SO¬2 and 1/4 of NOx are produced by burning fossil fuels. The other amount is produced naturally by decaying plants, volcanoes. Small amounts of nitrogen oxides are also caused by lightning. Once in the atmosphere, acid rain is divided into two categories: wet deposition and dry deposition. Wet deposition means that gases dissolve in the condensed water in the clouds and increase the number of hydrogen ions in the water droplets. Dry deposition means that the gases are returned to the ground via dust or fumes resulting from combustion. The particles stick to buildings, cars or trees. The particles will be washed away by rainwater, in which the gases dissolve and the number of hydrogen ions increases again.Source: http://www.epa.gov/acidrain/what/index.htmlPoint 3: Sulfur dioxide: anhydride sulfurous is a toxic gas with a rotten smell. The molecular shape is bent due to the lone electron pair in the sulfur atom. There are two resonant structures for sulfur dioxide. This means that the double bond between sulfur and oxygen can occur on both bonds. The 3 in the blue diamond of the chemical labels indicates that sulfur dioxide can cause serious or permanent injury. The zeros in the red and yellow diamonds indicate that sulfur dioxide does not burn under typical fire conditions and is normally stable. Sources: http://cameochemicals.noaa.gov/ch...... middle of paper.... .. It. The only real way to reduce acid rain is to reduce the amount of sulfur dioxide and nitrogen oxides produced. This can be achieved by using alternative energy sources. The Environmental Protection Agency (EPA) has created policies on sulfur dioxide and nitrogen oxides to reduce the effects of acid rain. Sources: http://www.epa.gov/acidrain/effects/index.htmlhttp://www.epa.gov/ acidrain/reducing/index.htmlPoint 8: Interesting FactsSince 1998, Harvard University has been wrapping its his bronze and marble statues in waterproof covers to protect them from acid rain. The term acid rain describes all types of acidic precipitation, such as fog, hail or snow. Acid rain and acidic air pollution are popular for lung problems in children and people suffering from asthma. Source: http://en.wikipedia.org/wiki/Acid_rain http://acidrain2004.tripod.com/id11.html