Answer:
1.
Their body is covered with feathers.
2.
They have beaks.
3.
Anterior limbs transform into wings.
4.
They lay eggs.
5.
Pinna absent.
6.
No mammary glands to feed their young ones.
7.
Diaphragm is absent.
1.Their
body is covered with hair.
2.
They don't have beaks. 3. They don't have wings. 4. Most of them give birth
to young ones.
5.
Pinna present.
6.
They have mammary glands to produce milk.
7.
Diaphragm is present-
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