Answer:
yes it is :) I hope this helps:)
C) Lactic acid and energy
This is the reason we feel a burning sensation during strenuous exercise.
<span>The heart contains four chambers: upper left atria, upper right atria, lower left ventricle and the lower right ventricle. Oftentimes, the right atria and right ventricle are together referred to as the "right heart" and the left atria and left ventricle are referred to as the "left heart", however there are still four separate chambers.</span>
