Blood oxygen levels give insight into how effectively your lungs bring in oxygen and how effectively your body absorbs and ...

Chemical composition of ancient rocks Iron sulfide can only exist in rocks that were formed before there was oxygen in the atmosphere. Rocks containing iron oxide can only form if oxygen is present.

Results showed that more than 50% of the sample (N = 45) desaturated to oxygen levels below 95%. Specifically, 48% desaturated between 90% to 95% and 8% desaturated below 90%. Pediatric patients ...