Geography - Burning of fossil fuels

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The burning of fossil fuels such as coal, oil and natural gas has major environmental impacts

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These fuels are burned in power stations, factories, homes and vehicles, releasing harmful gases into the atmosphere.

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This leads to serious environmental problems such as global warming and acid rain.

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One major effect is global warming. The Earth’s atmosphere naturally traps gases such as water vapour, carbon dioxide and methane in a process called the greenhouse effect, which keeps the planet warm enough to support life.

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However, burning fossil fuels releases extra carbon dioxide (CO₂), creating a thicker layer of greenhouse gases that traps more of the sun’s heat.

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As a result, the Earth’s temperature rises. In 2019, global CO₂ emissions reached 36 billion tonnes.

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A major effect of global warming is the melting of polar ice caps in Greenland and Antarctica.

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This causes sea levels to rise by up to 1.5 metres, threatening low-lying areas such as Bangladesh and the Maldives, which are only 1.5 metres above sea level.

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Rising sea levels can cause flooding, saltwater contamination and force people to relocate. In the Maldives, tourism accounts for 35% of GDP, so this also threatens the economy

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Another effect is changing rainfall patterns. Rain often falls in short, intense storms, causing flash flooding and damage to homes, roads and farmland. Storm Ophelia (2017) is an example of this.

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Global warming also affects plants and animals. Rising temperatures destroy habitats and threaten species such as polar bears.

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In Australia, the Great Barrier Reef is suffering from coral bleaching due to rising sea temperatures. It is worth around €1.5 billion and attracts over 2 million tourists each year.

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Another major effect of burning fossil fuels is acid rain. Burning fossil fuels releases sulphur dioxide and nitrogen oxides, which mix with moisture in the atmosphere to form acidic rainfall with a pH of 4.3 or lower.

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Acid rain damages lakes and rivers by increasing acidity. Fish often die when the pH falls below 5. In Sweden, over 10,000 lakes have become lifeless due to acid rain.

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It also damages forests and trees. In countries such as Germany and Switzerland, up to 50% of trees have been damaged. Acid rain weakens leaves, slows root growth and can kill trees.

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Acid rain also removes nutrients such as calcium from the soil, reducing crop yields and affecting farming.

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Finally, it damages limestone and marble buildings through chemical weathering. An example is Notre Dame in Paris.

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In conclusion, burning fossil fuels has serious environmental impacts through global warming and acid rain, damaging ecosystems, economies and people’s quality of life.