Answer:
4. p.complement system c.saliva b.sneezing
Coronary artery disease is when plaque in arteries causes blood to not flow correctly or as smoothly as possible. Therefore, a heart attack can occur if blood can't flow.
what is the list of things? food handlers usually have to wear hairnets, gloves and wash their hands often to prevent cross contamination and the spread of bacteria.
Vitamin A deficiency is the leading cause of preventable blindness in children.
