Naran the mole

Jasmine travels to meet her friend Naran, a mole living in Mongolia. Naran explains how she navigates using her whiskers, excellent hearing, and sense of smell. They play hide and seek, and Naran describes her underground habitat and diet. Jasmine bids farewell to Naran and receives another letter from her.

What are the different purposes of the tunnels that Naran lives in?

Why does Naran say she has to eat all day?