Causes of climate change
Environmental Science
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Answer
The primary cause of climate change is the increase in greenhouse gas concentrations in Earth's atmosphere, predominantly due to human activities.
Key Causes:
- Burning Fossil Fuels: The combustion of coal, oil, and natural gas for energy (electricity, transportation, industry) releases large amounts of carbon dioxide (CO2) and other greenhouse gases.
- Deforestation: Forests absorb CO2 from the atmosphere. When forests are cut down or burned, this stored carbon is released, and the planet's capacity to absorb CO2 is reduced.
- Industrial Processes: Various industrial activities, such as cement production and chemical manufacturing, release greenhouse gases like CO2, methane (CH4), and nitrous oxide (N2O).
- Agriculture: Livestock farming produces methane, while the use of fertilizers releases nitrous oxide. Land-use changes for agriculture also contribute.
- Waste Management: Landfills produce methane as organic waste decomposes.
- Natural Factors (Minor Role): While natural factors like volcanic eruptions, solar radiation variations, and orbital changes have influenced Earth's climate in the past, current scientific consensus indicates they play a very minor role in the rapid warming observed since the Industrial Revolution compared to human-induced emissions.
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