Acid rain and chemical weathering
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I can describe how acid rain is formed and the effects that it can cause.
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The pH of rain water is naturally below 7.
Chemical reactions between certain pollutants and water in the atmosphere may cause a decrease in the pH of rainwater.
Acid rain is not as acidic as vinegar or citric acid that is found in lemons and oranges.
Acid rain chemically reacts with carbonates that form many rocks to produce a salt, water and carbon dioxide.
Acid rain can have long term effects on habitats and ecosystems.
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