Question

Which of the following animals have a pair of lungs with air sacs?​

Answer 1

birds

Explanation:

Air sacs are found as tiny sacs off the larger breathing tubes (tracheae) of insects, as extensions of the lungs in birds, and as end organs in the lungs of certain other vertebrates. They serve to increase respiratory efficiency by providing a large surface area for gas exchange.

I hope It helped you please like and mark me on brainliest

Answer 2

Answer:

1) Birds

Explanation:

The air sacs permit a unidirectional flow of air through the lungs. Unidirectional flow means that air moving through bird lungs is largely 'fresh' air & has a higher oxygen content.