Nick's most likely suffering from a fungal infection in his nail. It is possible that this condition is onychomycosis.
Blood in the pulmonary vein is oxygen rich, while in all of the other veins, it is oxygen poor.
Hope this helps... mark as Brainliest plz
<span>1. Outpatient Drug Treatment.
2. Herbal Medicines.
3. Muscular Endurance.
4. Regularity.
5. Respiratory and Circulatory. (this is the only one I'm not sure of.)
6. The First Time.
7. Physical Activity.</span>
