A. Cactus
B. Plankton
C. Shark
D. Mushroom
Answer: Plankton
A. Cactus
B. Plankton
C. Shark
D. Mushroom
Answer: Plankton
Additional Information: Plankton, including phytoplankton and zooplankton, are part of the kingdom Protista.
Subjects: Biological Classification, Biology