Answer:
Explanation:
it is formed by the air in the atmosphere
I would have to say the answer is C.
A is incorrect since hydrogen is not an air pollutant.
B is incorrect because ozone is most definitely one of the top.
And D has cyanide which is a chemical for suicide during wars.
Hope this helps!
Answer:
false.
Explanation:
There are only nurses in nursing home's and there are only physical therapy's working in rehabs