How are birds and reptiles similar?
a. they both have scales and lay eggs.
b. they both have scales and have babies born alive.
c. they both have scales and migrate.
d. they both have scales and hibernate.

Birds and reptiles are known to be similar due to the fact that they both have scales on their skin. They also have a similarity of laying eggs when giving birth to their offspring. Some even say that birds evolved from reptiles such as the mystery of the chicken evolving from T-Rex. The answer must be A.