Answer:
hydrogen gas dominated earth's first atmosphere?
I believe it should be 94%.Normal arterial oxygen is approximately 75 to 100 millimeters of mercury. Values under 60 mmHg usually indicate the need for supplemental oxygen. Low blood oxygen is known as hypoxemia. Normal pulse oximeter readings usually range from 95 to 100 percent. Values under 90 percent are considered to be low.
Answer:
B.
Explanation:
the answer is nucleic acid
Answer:
Explanation:
metrics of time (ie. Lightyears)
I know 46 chromosomes are in body cells, and 23 are in sex cells... don't know if that helps...
