Answer:
Respiration occurs externally and internally.
Explanation:
Respiration is the metabolic process of converting the energy stored in biological molecules to usable energy inform of ATP. Respiration can be categories into three types; internal, external and cellular respiration.
EXTERNAL RESPIRATION
this is the process which involves breathing in (inhalation) and breathing out (exhalation) of gases.
INTERNAL RESPIRATION
When gases are exchanged between blood and body cells its said to be external respiration.
CELLULAR RESPIRATION
This involves the process by which food gets converted to energy and this is either aerobically ( needs oxygen) or anaerobically ( does not require energy.
