環かん境きょう問もん題だい

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Meanings

environmental problem; environmental issue

Broad term covering any problem related to the natural environment, such as pollution, climate change, or resource depletion.

環かん境きょう問もん題だいを解かい決けつするto solve an environmental problem
各かっ国こくが協きょう力りょくして環かん境きょう問もん題だいを解かい決けつしようとしている。
Countries are trying to work together to solve environmental problems.
環かん境きょう問もん題だいに取とり組くむto tackle/address an environmental problem
その会かい社しゃは環かん境きょう問もん題だいに積せっ極きょく的てきに取とり組くんでいる。
That company is actively tackling environmental problems.
環かん境きょう問もん題だいが深しん刻こく化かするfor an environmental problem to become serious
地ち球きゅう温おん暖だん化かにより環かん境きょう問もん題だいが深しん刻こく化かしている。
Environmental problems are becoming more serious due to global warming.
〈事こと〉が環かん境きょう問もん題だいを引ひき起おこすfor something to cause an environmental problem
工こう場じょうの排はい水すいが環かん境きょう問もん題だいを引ひき起おこした。
The factory's wastewater caused an environmental problem.

公こう害がいN2
公害 specifically means pollution or environmental damage caused by industry, whereas 環境問題 is the broader umbrella term for any environmental issue.
環かん境きょう破は壊かいN2
環境破壊 emphasizes the act of destroying or degrading nature, while 環境問題 covers the resulting issue or topic more generally.

環かん境きょう保ほ護ごN2
環境保護 means protecting the environment (a solution), while 環境問題 means the environmental problems themselves — learners often mix up which is cause and which is response.

Compound of 環境 (かんきょう, 'environment') and 問題 (もんだい, 'problem').