________________ Gas hampers oxygen from reaching the brain.
A) Carbon dioxide
B) Carbon monoxide
C) Nitrogen peroxide
D) Hydrogen
Correct Answer:
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Q2: _ gas overestimates the rate of breathing
Q3: During fire, the human body can withstand
Q4: The content of oxygen is normally _%
Q5: The hazard with concerns damage or destruction
Q6: It is found that _ are not
Q7: Noise is
A)an unwanted noise
B)an irritant
C)a source of
Q8: Sound is measured in
A)Hertz
B)Decibel
C)ppm
D)none of the above
Q9: What is called for the collection of
Q10: What is called for the method of
Q11: How many methods of rainwater harvesting are
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