What are the spongy sac-like structures in higher animals called?a. Gi

1.	What are the spongy sac-like structures in higher animals called?a. Gills b.spiracles c.trachead. lungs
Answer» ANSWER: GILL is the RIGHT answer

What are the spongy sac-like structures in higher animals called?a. Gills b.spiracles c.trachead. lungs

Answer»

GILL is the RIGHT answer