Mention two similarities between.
(i) Avis and mammals (ii) A frog and crocodile
(iii) A turtle and Pila
(i) Aves and mammals are homeothermal and have extra embryonic membranes.
(ii) Frog and crocodile are cold blooded and are tetrapods.
(iii) A turtle and Pila have hard covering over the body and are cold-blooded animals.