How would humans most likely function in an atmosphere that was 19% oxygen?
O They would suffocate in an atmosphere below 21.5% oxygen.
They would be exposed to toxic levels of oxygen; humans require an atmosphere of only 12% oxygen to survive.
O They would be at risk of oxygen deprivation in an atmosphere below 19.5% oxygen.
O They would be very healthy; our current atmosphere is 18% oxygen.



Answer :

Final answer:

Humans functioning in an atmosphere with 19% oxygen would be at risk of oxygen deprivation.


Explanation:

Humans would be at risk of oxygen deprivation in an atmosphere below 19.5% oxygen. The normal atmospheric concentration of oxygen is around 21%, and a decrease to 19% could lead to health risks due to lower oxygen availability.


Learn more about Oxygen concentration in the atmosphere here:

https://brainly.com/question/30645009


Other Questions