In regards to a patient who is hypoxic, what is the minimum number we look for in a patient's oxygen saturation?
a) 85%
b) 88%
c) 91%
d) 94%

 the correct answer is c) 91%

Values under 60 mm Hg usually indicate the need for supplemental oxygen. Normal pulse oximeter readings usually range from 95 to 100 percent.

As stated above, a reading of 94 to 99 percent or higher indicates normal oxygen saturation, and anything below 90 percent is considered to be low blood oxygen, also known as hypoxemia.

Explanation:

Hypoxemia occurs when oxygen levels in the blood become so low that tissues and organs in the body don't get the oxygen they need. This happens because COPD damages the air sacs, which means the lungs cannot transfer the available oxygen to the bloodstream.

climate change and pollution

the correct answer is:

a population changes in response to a change in the environment.