Answer:
<em>The</em><em> </em><em>pulsation</em><em> </em><em>of</em><em> </em><em>heart </em><em>is</em><em> </em><em>called </em><em>heartbeat</em><em>.</em>
No, the atom does have 3 main parts but it has 3 somatic parts not 2.
Answer: Possibly, a pulmonary exercise stress test.
Explanation: