Answer:
Hemoglobin
Explanation:
RBCs have their rich red color because of a vitally important iron-containing protein called hemoglobin. The protein picks up oxygen molecules as the blood exchanges gases in the lungs.
By slowly introducing the changes and not implementing them all at once.
Answer B is the best choice. Depression says how you want nothing and feel like everyone's against you.
The answer is A - vitamin deficiency
Answer:nuclear
Explanation:
Nuclear means when a family is two parents and dependent children