All vertebrates have:
a.)radial symmetry.
b.)bilateral symmetry.
c.)an open circulatory system.
d.)an exoskeleton.

What can be found in every skeletal muscle? a. nerves, bones, cartilage, and connective tissue b. tendons, cartilage, nerves, and blood vessels c. muscle fibers, nerves, connective tissue, and blood vessels d. tendons, nerves, blood vessels, and bones

Why is excretion necessary to maintain homeostasis?

What happens whenever a net force acts on an object