Write 8 adaptative feature of bird

 All birds are warmblooded, or endothermic, animals. Birds are vertebrates because

they have backbones. All birds have a four-chambered heart, a

characteristic they share with mammals. All birds lay hardshelled eggs. Birds have only two legs. Their forelimbs have

become modified into wings for flying. All modern birds evolved

from ancestors that could fly.

Explanation:

doctors i believe if i'm wrong sorry

for 8 am not sure maybe yes?

for 9 if it is asking if the male is more or less it would be less

hope i even just a little : )