Respuesta :
Answer:
A
Explanation:
All involve the active transport of gases across membranes.
All of these systems have in common is that all involve the active transport of gases across membranes.
What do you mean by Gaseous exchange?
The gaseous exchange may be defined as the body getting rid of carbon dioxide and taking in oxygen in order to maintain the process of respiration.
Active transport involves the movement of a chemical substance by the expenditure of energy against a gradient in concentration or in electrical potential across a plasma membrane.
Therefore, all of these systems have in common is that all involve the active transport of gases across membranes.
To learn more about Active transport, refer to the link:
https://brainly.com/question/25832845