Which type of system do most animals without backbones have?
sensory neurons Veins and arteries. Nervous system Stereo system Root system to move people Skeletal system insects
A B C D E F G H
Invertebrates are animals without a backbone.
Most animals without backbones have a nervous system.
Which type of system do most animals without backbones have? (A) sensory neurons (B) Veins and arteries. (C) Nervous system (D) Stereo system (E) Root system (F) to move people (G) Skeletal system (H) insects