the environment is contaminated by dust and smoke emissions because the environment is becoming worse. smoke and dust are emitted from vehicles pollute the air. waste water from factories pollute water sources. the remedy is still very limited. we must contribute to the protection of the environment: growing more trees, do not throw garbage disposal properly stipulated place ... the constantly growing for jobs there will help to make our environment more and cleaner.
đang được dịch, vui lòng đợi..
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