Ex.] A big white chubby polar bear, just ate his breakfast.
. A white polar bear, is sleeping on ice.
.A chubby polar bear, is cuddling with her baby.
. A cute polar bear that has been trying catch a fish, finally caught a baby fish
. A small chubby polar bear, is trying to find his mom.
Appositive is important because without the appositive the information is essential to the meaning of the sentence.