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:
you too!
Explanation:
thanks and merry christmas!
Answer:
True
Explanation:
Having an shoe that does not match the exercise will only serve to hinder you. Imagine doing ballet in heels, soccer in ballet shoes, swimming with boots, etc. Having adequate shoes/equipment can give you a competitive advantage and can help you improve your personal records.
Answer:
Call 9-1-1 and than afterward attack the attacker but calling 9-1-1 is better
Explanation:
