Smokeless Fuels Contain Ultrafine Particles That Get Embedded in Lungs, Study Shows
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Key vocabulary words with IPA pronunciation, definitions, example sentences, and interactive quizzes.
Phrases with type tags, bilingual definitions, usage notes, and example sentences.
the degree to which the air is clean or polluted
risks or threats that are not easily noticed
to move far inside something
Extremely small particles (less than 0.1 micrometers) suspended in the air, often resulting from combustion.
Solid fuels (like anthracite or certain briquettes) that do not emit visible smoke when burned, often required by law in specific areas.
The electromagnetic radiation that is visible to the human eye, which travels in a wave-like pattern.