The answer to this is B....
Bacteria is not as complex as human and other animal lives, which means they need less energy and DNA to evolve in these ways.
The layer of the sun is in three equally side the sun the moon and the galaxy
The contractions of the heart is what creates out blood to pulse through out body and is the basis of our blood pressure; which means this statement is TRUE.
The systolic number (top) of the blood pressure is our heart physically pushing the blood out of the heart and to the rest of the body.
The diastolic number (bottom) of the blood pressure our heart at rest when it has just finished with one pump.