pollution
/pəˈluʃən/
noun
- The presence or introduction of harmful substances or waste into the environment.
- Air pollution from factories can cause breathing problems.
- The river is full of pollution from nearby farms.
- Many cities are working to reduce plastic pollution in the ocean.
- Something that makes a place or thing dirty, impure, or harmful.
- The pollution from the old cars made the street smell bad.
- Light pollution makes it hard to see the stars in the city.
- Noise pollution from the airport keeps people awake at night.
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