Answer:
Blood from the mother passes through the placenta, filtering oxygen, glucose and other nutrients to your baby via the umbilical cord. The placenta also filters out substances that could be harmful to your baby and removes carbon dioxide and waste products from your baby's blood.
Explanation:
I believe the answer is C
Answer:
is a highly glycosylated and big type I transmembrane fusion protein that is made up of 1,160 to 1,400 amino acids, depending upon the type of virus.
Explanation: