__ 13, environmental threat caused by air pollution (4)
Crossword clue · 1 known answers · 1 appearances · Last seen in the The Guardian crossword on May 2, 2026
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ACID
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About this clue
The clue “__ 13, environmental threat caused by air pollution (4)” has appeared 1 times in our database with 1 different answers, so count the squares in your grid and check the crossings before you commit. Most recently it ran in the The Guardian crossword on May 2, 2026, where the answer was ACID.
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