Which statements explain the gas exchange that happens at the alveoli?

a) Carbon dioxide moves from the blood to the air in the

alveoli.

b) the capillaries that surround the alveoli exchange both carbon dioxide and oxygen.

c) oxygen is absorbed by the blood in the capillaries that surround the alveoli.

an organism's phenotype is the  form of a trait  that it  displays. for  flowercolor, a pea  plant  can  display  a phenotype of purple or white flowers. an organism's  genotype  is the alleles of a gene it contains. based on his data, mendel concluded that a phenotype can be  determined  by more than one  genotype.