Advanced Science Primary 6 Interactions

Which of the following human activities contributes the most to the increase in the concentration of carbon dioxide in the atmosphere?

A Using solar energy instead of coal
B Recycling of plastic materials
C Over-fishing in the oceans
D Deforestation and burning of fossil fuels
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Worked Solution

Step 1: Burning fossil fuels releases stored carbon into the air. Step [2-9]: Deforestation removes trees that would otherwise absorb carbon dioxide. Step [2-9]: Both activities significantly increase atmospheric CO2 levels.

Correct answer: Deforestation and burning of fossil fuels

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