Rhinoviruses and herpes simplex are just two common viruses out of the other thousands of them that the immune system has to protect the body against.
Answer:
A normal line
Explanation:
"In geometry, a normal is an object such as a line, ray, or vector that is perpendicular to a given object."
Hope this Helps
Carbon Monoxide would have been mostly to effect the embryo as it targets the respiration system.
<span />
