Biology 1st Edition by Jerome Krueger, Kendra Hill, Robert Noyd

تمرين 12

Which one of the following statements is correct?
A) Heart attacks are caused by a blocked artery in the coronary circuit, and a stroke is caused by a blocked artery to the brain.
B) Heart attacks and strokes are caused by a blocked artery in the coronary circuit.
C) Heart attacks and strokes are caused mainly by genetic factors.
D) Heart attacks and stroke are caused mainly by age.