A) State any two ways in which pollution is put into the atmosphere by industry.

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a) State any two ways in which pollution is put into the atmosphere by industry.

• Burning of fossil fuels: Industries burn coal, oil, and natural gas to generate energy for their operations. This process releases gases such as carbon dioxide ($\text{CO}_2$), sulfur dioxide ($\text{SO}_2$), and nitrogen oxides ($\text{NO}_x$) into the atmosphere.
• Industrial processes and manufacturing: Specific industrial activities like chemical production, metal smelting, and cement manufacturing can release particulate matter (fine dust), volatile organic compounds (VOCs), and various toxic gases directly into the air as by-products.

c) Give reasons for each case.

• Burning of fossil fuels: The combustion of fossil fuels is an exothermic reaction that produces energy. However, these fuels contain impurities (like sulfur) and their carbon content oxidizes to form $\text{CO}_2$. Incomplete combustion can also produce carbon monoxide ($\text{CO}$). These gases contribute to acid rain, smog, and the greenhouse effect.
• Industrial processes and manufacturing: These processes often involve chemical reactions or high-temperature operations that produce gaseous or particulate waste products. For example, smelting ores releases metal dust and sulfur compounds, while chemical synthesis can produce various organic and inorganic pollutants. These emissions are often a direct result of the raw materials used and the chemical transformations occurring in the industrial process.