what move by waving?
humans cilia kids algae cells people plankton weater
A B C D E F G H
Cilia wave in a coordinated way to move the protozoa in one direction.
cilia wave to move
what move by waving? (A) humans (B) cilia (C) kids (D) algae (E) cells (F) people (G) plankton (H) weater