Pneumothorax is most likely to be the diagnosis.
<h2>Answer:</h2>
<u>Natural gas is indoor pollutant</u>
<h2>Explanation:</h2>
From the options given above smog and vehicle exhaust are outdoor pollutants. Oxygen is not a pollutant at all. The only option left is natural gas. When we cook food or use heaters we use natural gas so the burning of natural gas pollutes the indoor environment that is why we can say that natural gas is indoor pollutants.
Answer:
1) It first develops during adolescence.
Explanation:
Puberty during which a young person develops from a child into an adult.
C an obligation or willingness to accept responsibility
