What is the pathway of air into the body? Which plays both a role in physical and chemical digestion?

teeth
saliva
gall bladder
villi

I'm not sure on this, but I would say saliva. Take this answer with a grain of salt though

Saliva

Explanation:

I just got 100% on Edg.

how do heroes resolve conflicts in beowulf?

question 15 options:

they sue each other in court

they get a mediator

the seek counseling

they get even or take revenge

explanation:

if the type of the food available changes, then the frequency of beak types will change, because birds with beaks more suited to the available food will be more successful over time.