Hemoglobin transports ____ and ____, and is typically found in higher concentrations in _____.
a. O₂, H₂, elderly people
b. CO₂, O₂, women
c. CO₂, O₂, men
d. O₂, CO₂, children
a. O₂, H₂, elderly people
b. CO₂, O₂, women
c. CO₂, O₂, men
d. O₂, CO₂, children