Answer:
please ask full questions
Your answer would be A. Hope this helps!
Answer:
Explanation:
In Spanish, the preterite (often spelled "preterit") verb tense expresses an action that took place at a definite time in the past. It is contrasted with the imperfecttense, which expresses an action that took place at an indefinite time or has not yet been completed.
Yes because heart have 4 valves which is tricuspid, bicuspid, pulmonary and aortic. Blood have to flow in one direction.
