Which role do ultrafine particles play in dirty air? They contribute to less than 13,000 premature deaths a year. They can worsen symptoms for people with breathing difficulties. They are easily removed from the air when people see them floating. They are constantly filtered by the nose, which prevents lung absorption.
Answers
Answer:
The explanation is given below:
Explanation:
The UFPs or the ultrafine particles refers to the particulate matter of nanoscale size, that is, less than 0.1 micrometer or 100 nanometers in diameter. The ultrafine particles are mainly obtained from the vehicular discharges and are found in the greatest amount on the freeways.
It has been shown that the ultrafine pollution particles may result in an essential function in stimulating supplementary pathways or inflammation, which elevates the condition of asthma. The ultrafine particles discharged by vehicles and other sources of combustion are enveloped with a layer of organic chemicals, which can be discharged into the lungs.
These chemicals produce free oxygen radicals that stimulate the immune system in the lung via a cell-tissue destructing procedure called oxidation. Oxidation aggravates the allergic inflammation in the lungs of the individuals suffering from asthma.
Hence, the correct answer is option B, that is, they can worsen the symptoms for the people with breathing issues.
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The role of ultrafine particles in dirty air is to worsen symptoms for people with breathing difficulties. (Option B)
- The size of UFP or ultrafine particles usually ranges between 0.1 to 100nm in diameter.
- These particles are attained from vehicular discharge that can cause inflammation and may block the respiratory pathway.
- When combine with other sources, they form a layer of organic chemicals producing nascent oxygen molecules.
- Oxidation of such molecules in the lungs can cause asthma.
- Hence, Option B is correct.
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