Question

How many types of external respiration.​

Answer 1

Answer:

Three types

Explanation:

Three types of respiration include internal, external, and cellular respiration. External respiration is the breathing process. It involves inhalation and exhalation of gases.

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Answer 2

Answer:

External resorption can be classified into four categories by its clinical and histologic manifestations: external surface resorption, external inflammatory root resorption, replacement resorption, and ankylosis.