Answer:
ABO blood group system, the classification of human blood based on the inherited properties of red blood cells (erythrocytes) as determined by the presence or absence of the antigens A and B, which are carried on the surface of the red cells. Persons may thus have type A, type B, type O, or type AB blood.
Explanation:
I believe it can be by eating them
Atoms > Molecules > Organelles > Cells > Tissue > Organ > Organ System > Organism
Umm you can write
watersheds are important because it gives water to the plants and lets them grow and help the environment
The symptoms given above are associated with CYSTIC FIBROSIS.
Cystic fibrosis is a genetic disorder that usually affect the lungs, but it can also affect the liver, pancreas, intestines and the kidney. Symptoms include difficulty in breathing, coughing up of mucus, etc. The disease causes persistent lung infections and limit the ability to breath over time.