When to use pollution in Korean
Korean: 환경오염[ hwan-gyeong-o-yeom ]

When to use it
Pollution means dirty or harmful things in the air, water, or land. We use it when talking about trash, smoke, chemicals, and other things that hurt nature. In Korean, 환경오염 means pollution that damages the environment.
Example sentences
환경오염 때문에 강물이 더러워졌어요.
Because of pollution, the river became dirty.
선생님은 학교에서 환경오염을 설명했어요.
The teacher explained pollution at school.
환경오염을 줄이려고 우리는 재활용해요.
We recycle to reduce pollution.
아빠와 저는 공원의 환경오염을 걱정해요.
My dad and I worry about pollution in the park.
이 공장은 환경오염 문제로 뉴스에 나왔어요.
This factory was on the news because of a pollution problem.
여행 중에 바다 환경오염을 보고 슬펐어요.
I was sad when I saw ocean pollution during the trip.