Answer:
Its A
Net 2 NADH, 2 ATP, 4 CO2, 2 FADH2
Answer: D) Pulmonary and aortic valves.
Explanation
There are two main heartbeats from a healthy heart.
The first beat is called the S1 or the lub, and it occurs when the atrioventricular valves (comprising the mitral and tricuspid valves) close.
The second beat is called the S2 or the dub, and it occurs when the semilunar valves (comprising the aortic and pulmonary valves) close.
Listening for heart beats is an essential part of cardiac auscultation.
<span>the outer ear is used to collect sound waves.
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All of about is the answer
Answer:
Could probably find it in Google.
