<span>A bacterial disease is caused mainly by bacteria or
bacterial components and is highly contagious. Disease happens mostly when the
abnormal number of bacteria present on the body exceeds its threshold. On the
other hand, a viral disease occurs when one’s body is invaded by pathogenic
viruses that normally attacks susceptible cells (common when one’s immune
system is weak). Since they originated from two different sources, the treatment
is very different. For bacterial diseases, it is being treated by using
antibiotics specific for the bacteria present in the body. However, for a viral
disease, antibiotics will have no effect on viruses, hence, antiviral drugs
have been developed. </span>
The two chambers at the top of the heart called atria, the two chambers on the bottom are ventricles. The tip of the bottom of the heart is the apex.
Answer:
D . It serves as a preparatory phase for a possible pregnancy
Explanation: the ovaries release an egg and the menstrual cycle occurs because its preparing for a pregnancy in case the egg gets fertilized.
