Birds evolved from dinosaurs, and the earliest types actually had teeth. The problem with teeth is that they are heavy, and need heavy jawbones to support them, so lighter, faster birds evolved with horny beaks, and outcompeted the earlier versions, which became extinct.
DOTA
Yes.
Yes, by breaking down the food you eat with your teeth it makes it easier to digest.
Grit is important for birds because birds don't have teeth. They depend on the grinding action of the grit in their gizzards to break down their food so that they can digest it.
It helps digest their food.
break down the food to digest
No existing bird of any species has teeth. Birds have beaks.
No modern bird has teeth.
Our teeth chew up our food to make it smaller and get all the nutrients, so that it is easier to digest.
Soft, wet cat food is the best option for cats with no teeth as it is easier for them to eat and digest.
The teeth which crush food are called molars; the teeth which cut food are the incisors.
Our teeth chew up our food to make it smaller and get all the nutrients, so that it is easier to digest.