How do rays and skates obtain food
All mammals have an internal skeleton
Yes it is.
internal skeleton
Internal Skeleton
endo-skeleton
The skeleton inside the body is called the endoskeleton. It provides structure, support, and protection for the body's internal organs.
any mammal has an internal skeleton but bugs have an exoskeleton
Internal.
A cheetah has an endoskeleton, which is an internal skeleton.
internal
All mammals, birds, reptiles, amphibians, and fish (but not all fish) have internal skeleton.
The defining characteristic of a Vertebrate is an internal skeleton. Orangutans have an internal skeleton so they are vertebrates.