Question

please say that this is right or wrong
question is difference between aves and mammalia

Answer 1

all of these are right except that not all mammals are viviparous but platypus and echidna are mammals and are opivarous.

Answer 2

These differences are absolutely correct. But for more differences you can the example of aves like birds. Example : pigeon,crow etc and mammals like humans,dog,cat etc...