Comprehensionmedium · Past Paper

Read the passage: Forests are called the 'lungs of the world'. They absorb carbon dioxide and release oxygen. Deforestation, however, is threatening this balance. Protecting forests is vital for our survival. Question: Why are forests compared to 'lungs'?

ABecause they are shaped like lungs
BBecause they absorb carbon dioxide and release oxygen
CBecause they are found everywhere
DBecause they provide wood for furniture

✓ Correct Answer: BBecause they absorb carbon dioxide and release oxygen

The passage explains they are called 'lungs' because of their gas exchange role (absorbing CO2 and releasing O2).

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