Question

every surd is an irrational number but every rational number not to be a
justify your answer

Answer 1

surd is the answer because, irrational number can be surd because they are in root values and they won't divisible with any number and rational number may or may not be surd

irrational number ex=root 2

Answer 2

Answer:

Vertebrates include amphibians, reptiles, mammals, and birds, as well as the jawless fishes, bony fishes, sharks, and rays. More than 64,000 species of vertebrates have been described, but the extant vertebrate species represent only a small portion of all the vertebrates that have existed.