Answer: • Birds have feathers covering their bodies while other animals do not have feathers. • The sharp beak without teeth is another characteristic to the birds but not to all the animals. • Except for mammals, birds are the only other group of animals who maintain warm-blooded metabolic activity.
Explanation: Hope this helps :)
The bill of rights was in the constitution, which was for the whole country. so i believe the answer would be d. national