What lacks a centralized nervous system?
Damaged hearing Humans Horses Sand dollars insects Chickens Pesticides barnacles
A B C D E F G H
Sand dollars and sea biscuits are also echinoderms.
Sand dollars lack a centralized nervous system
What lacks a centralized nervous system? (A) Damaged hearing (B) Humans (C) Horses (D) Sand dollars (E) insects (F) Chickens (G) Pesticides (H) barnacles