Question

read the paragraph from the section \what big teeth you have!\ \there are rodents that have continuously growing incisors,\ says begun. beavers, squirrels and rats are a few examples. \but they cant do it at will.\ in fact, these rodents must grind their teeth or gnaw on hard items such as wood and bone to keep them short. if left unchecked, overgrown incisors can interfere with eating, injure their mouths and even grow through their skulls. which idea is best supported by the paragraph?

Explanation:

The paragraph details that some rodents like beavers, squirrels and rats have continuously - growing incisors. They must gnaw on hard items to keep them short as overgrown incisors can cause problems like interfering with eating and injuring mouths.

Answer:

Rodents with continuously - growing incisors must gnaw on hard items to maintain tooth length.