Question 14 (1 point) Why are the layers of cells thicker in the esophagus that in areas further down the GI
tract?

to protect inner layers
to reduce friction
to retain more mucous
to provide more flexibility

You would need to take a picture so i can see

//(b) both involve the use of levers;

Aand b antarctica is a north pole.  field lines enter earth near the north pole.the magnetic pole near antarctica is a north pole.compasses point toward a magnetic pole that is a north pole.field lines circle earth from east to west.a compass can lead a hiker to the geographic north pole.