Standard Science Primary 6 Interactions

Which of the following human activities is a direct cause of global warming due to the increase in carbon dioxide levels?

A Using chemical fertilisers in farming
B Building noise barriers near highways
C Burning of fossil fuels
D Overfishing in the oceans
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Worked Solution

Step 1: Global warming is linked to the greenhouse effect. Step 2: Carbon dioxide is a major greenhouse gas. Step 3: Burning fossil fuels (coal, oil, gas) releases large amounts of CO2 into the atmosphere. Step 4: This contributes directly to the increase in global temperatures.

Correct answer: Burning of fossil fuels

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