Que vantaxes supon para os vertebrados a adquisición dun esqueleto? Tanto o cangrexo como o guepardo posúen esqueleto, porén, só o leopardo é un animal vertebrado. Por que?

lizards have adapted to life in the desert. some desert lizards have toes with spiny scales to them run across the sand without sinking. some use the sand to hide from predators, or to search for small animals that they prey upon.

you can have just about every answer you can think of