Bc if u don't then ppl will do illeagal stuff with it
Answer:
Piano
Explanation:
Because it has the larger mass
The host that is "carrying" the disease.
<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.
I believe all of the above is correct.
