Answer:
mucosa
Explanation:
The pharynx and esophagus possesss all of the basic histological layers of the gastrtointestinal tract (GI tract). The layers are:
- mucosa - layer closer to lumen which cocnsists of epithelium, lamina propria and muscularis mucosae
- submucosa-layer of loose connective tissue with vessels
- muscularis propria-layer of inner circular and outer longitudinal muscular layers
- adventia - layer of loose connective tissue
We can’t see the picture :(
Maybe post another question but with the picture
I think the answer would be c. because for birds with longer beaks, it was easier to eat seeds off a cactus (for example), and for birds with shorter seeds, it was easier to eat seeds off the ground.
