Which of the following is the best example of an organism maintaining homeostasis?
a. a lion panting after a chase.
b. a venus fly trap catching a fly.
c. a ladybug becoming infected by a virus.
d. a prairie dog digging tunnels in the ground.

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands