HOTS Science Primary 6 Interactions

A construction project destroyed a large area of forest. How would this most likely affect the carbon dioxide level in the surrounding atmosphere?

A It will decrease because construction machines use oxygen.
B It will decrease because there are fewer animals.
C It will remain the same because plants also respire.
D It will increase because there are fewer trees to perform photosynthesis.
Show Worked Solution

Worked Solution

Step 1: Trees absorb carbon dioxide for photosynthesis. Step [2-9]: Destroying the forest means fewer trees are present to remove CO2. Step [2-9]: This leads to a buildup of carbon dioxide in the air.

Correct answer: It will increase because there are fewer trees to perform photosynthesis.

Want more questions like this? Superholic Lab has 10,000+ MOE-aligned questions with full worked solutions.

Start Free Trial — 7 Days Free