Answer:
A. a healthy nervous system and normal digestion
Explanation:
<span>The data showed the concentration of antibodies which lets you know how far the disease is. The deeper the color the more prominent the antibodies, so you can see who has been exposed to the disease longer and try and identify patient zero.</span>
Answer:
Explanation:
The umbilical cord is a narrow tube-like structure that connects the developing baby to the placenta. The cord is sometimes called the baby's “supply line” because it carries the baby's blood back and forth, between the baby and the placenta.
