Will give brainlest to correct answer animals are often grouped as a. vertebrates or invertebrates. b. heterotrophs or autotrophs. c. walkers or crawlers. d. swimmers or runners.

Vertebrates or invertebrates reason being that invertebrates such as an arthropod, mollusk, annelid, coelenterate, etc. comprising 95 percent of animal species and about 30 different phyla Crazy right? Vertebrates like us and other creatures make up the rest which have a backbone unlike invertebrates..

Because the earth is not round ,but it may seem round when viewed from ,our planet but true some points earth is not round was an oblate spheroid -a square that it squashed as globe however is not even a perfect oblate spheroid.in fact isaac newton's first proposed that earth was not perfectly round but it was an oblate spheroid instead.that mean a square that is squashed as its poles and swollen at the