Final answer:
Explanation of industrial activities producing CO₂, human activities emitting CO₂, and a balanced equation for octane combustion.
Explanation:
Industrial processes such as cement and steel production are significant sources of carbon dioxide (CO₂) emissions due to the burning of fossil fuels and materials used. Examples include cement production leading to 2 billion tons CO₂ emissions in 2016 and steel production generating 5% of global CO₂ emissions.
Deforestation, animal agriculture, and land clearing are human activities releasing CO₂. The primary human activity emitting CO₂ is the combustion of fossil fuels like coal, oil, and gas. The combustion of octane, a component of gasoline, can be represented by a balanced equation.
The balanced equation for the combustion of octane is: 2C₈H₁₈ + 25O₂ -> 16CO₂ + 18H₂O.
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