HOTS Science Primary 6 Interactions

Deforestation in a tropical rainforest leads to an increase in carbon dioxide levels in the atmosphere. Which of the following is the MOST direct consequence of this change?

A Increased rate of photosynthesis in remaining trees.
B Increased trapping of heat in the atmosphere.
C Immediate extinction of all forest animals.
D Decrease in the Earth's average temperature.
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Worked Solution

Step 1: Trees remove carbon dioxide (CO2) from the air for photosynthesis. Step 2: Deforestation means fewer trees, leading to higher CO2 levels. Step 3: CO2 is a greenhouse gas that traps heat escaping from Earth. Step 4: Therefore, the direct consequence is enhanced global warming (heat trapping). Final Answer: Increased trapping of heat in the atmosphere.

Correct answer: Increased trapping of heat in the atmosphere.

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