Answer:
I think it's B
Explanation:
During QRS that's when the depolarization happens and when that happens the ventricles contract and push blood to the lungs and body.
Ventilation systems are needed in a <span>multicellular organism to actually obtain oxygen and give out carbon dioxide. Without this ventilation system, it would be very difficult for multicellular organisms to survive. It has been also observed that surface diffusion is not enough for a multicellular organism to breath.</span>
Volcanoes, earthquakes and mountain ranges are all results of the tectonic movement of the Earth.
<span>When two plates collide and one does not completely give way and go under the other the crust is pushed up forming mountain ranges.
</span>An earthquake is the shaking and vibration of the Earth's crust due to movement<span> of the Earth's </span>plates<span> (plate </span>tectonics<span>).
</span>And volcano is created <span>when </span>plates<span> are pushed together or pulled apart.
So, the relationship between volcanoes, earthquakes and mountain ranges is their connection with the tectonic movement of the Earth.</span>
The correct answer is the insertion.
<span>Insertion is the attachment site of the muscle end that does move when the muscle contracts. On the other hand, the origin is the attachment site that does not move during contraction (end of the muscle is fixed).</span>
Protista organisms are most closely related to Archaebacteria.
