--- cited_by: [] definition: |- Sulfur oxides (SOx) can occur naturally from such sources as volcanoes, sulfur springs and decaying organic matter, or from anthropogenic sources such as fossil fuel combustion, brickworks, and spontaneous combustion in coal mine spoil heaps. Sulfur oxides in the atmosphere are usually removed by acid rain. href: https://data.globalchange.gov/gcmd_keyword/cc676fb2-cf17-413d-bb00-0b95d231f157.yaml identifier: cc676fb2-cf17-413d-bb00-0b95d231f157 label: SULFUR OXIDES parent_identifier: b80a242d-d5f5-4a5f-976c-6f6fe2ab6b2c uri: /gcmd_keyword/cc676fb2-cf17-413d-bb00-0b95d231f157