Its according to their organs.. where the my come from.. where they inhabit..what the eat.. how they look like..
take for example: reptiles.. they are classified as reptiles cause.. they are the only types of animals who have hard scaled skin not like fish..
In the nucleus, all blueprints and instructs are stored there
Hollow, that's why birds can fly. There is nothing in the bone to weigh them down.
Vascular plants reproduce with seeds, nonvascular plants do not, therefore it is C.
Yes sir or ma’am have a good night