Answer: Carbon monoxide
Explanation: Is the only substance of the four options given that is f
found as a gas.
<span>What is a disorder Appropriate for a common cold ?
Dry throat
sore throat
Cough
slight fever
sneezing
Hoarsely
Stuffy nose
Mild <span>headache.</span></span>
Driving it is A because you dont talk or anything while driving
Avoid high impact exercises.
Exercise at moderate intensity.
Slowly increase the duration.
