Question
Read the sentence to find out whether there is any
grammatical or idiomatic error in it. The error, if any, will be in one part of the sentence. If there is âNo errorâ, the answer is (5). (Ignore errors of punctuation, if any).  Several countries are working towards (1)/cutting down carbon emissions (2)/ to mitigate the adverse effects (3)/ of climate changing (4) / No error (5)Solution
The phrase "climate changing" is incorrect. The correct phrase is "climate change," which is a noun used to refer to the long-term alteration of temperature and typical weather patterns. Correct sentence: Several countries are working towards cutting down carbon emissions to mitigate the adverse effects of climate change.
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