What are immobile?
sharks sperm cells an organism's body adult sponges critical organs humans gastropod shells all matter
A B C D E F G H
Sessile Attached permanently, immobile.
adult sponges are immobile
What are immobile? (A) sharks (B) sperm cells (C) an organism's body (D) adult sponges (E) critical organs (F) humans (G) gastropod shells (H) all matter