Differentiate between internal respiration and external (surfacial) respiration.

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(N/A)
Internal RespirationExternal (Surfacial) Respiration
$(1)$ It occurs inside the cell.$(1)$ It occurs at the respiratory surface.
$(2)$ Exchange of respiratory gases does not occur here.$(2)$ Exchange of respiratory gases occurs between the atmosphere and blood.
$(3)$ Energy is released in the form of $ATP$.$(3)$ Energy is not released.
$(4)$ It is a complex biochemical process.$(4)$ It is a physical process based on the law of partial pressure of gases.

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