true or false? the effectiveness of the gaseous exchange surface in animals is increased by it being ventilated.

The statement "The effectiveness of the gaseous exchange surface in animals is increased by it being ventilated" is true. Ventilation helps maintain a steep concentration gradient by bringing in fresh oxygen and removing carbon dioxide, which is crucial for efficient gas exchange at the surface. This continuous movement of air or water over the exchange surface allows for sustained diffusion of gases, thereby increasing the effectiveness of the gas exchange process in animals.