Because, when an infection exist in the human body it tends to spread, so if the cells stayed in one space then the infection would have a much greater opportunity to severly make that person very ill before the cells could even get to the infection.
<span>Communicable disease refers to any infectious
illness that is transferable from one person to another by direct or indirect
contact in terms of bodily discharge or aided by a vector (a parasite which
transmits disease). The term is synonymously used with contagious disease. </span>
Graying of hair
Thinning of skin
Hot flashes
B is spelled wrong there is no r
distance=500m=1/2 hours.
speed=72km/hr
speed=distance/time
time=distance/speed
time=1/(72×2)
time=1/154 hour
Explanation:pla mark brainlist
