Question

select the correct answer. why are biologists still debating the classification of protozoans? a. biologists never agree on anything. b. there are estimated to be over 50,000 different species. c. protozoans can be heterotrophic or autotrophic. d. protozoans can be unicellular or multicellular.

Explanation:

The large number of species makes classification complex and debatable. Protozoans are mainly unicellular and mostly heterotrophic, ruling out C and D. And A is an over - generalization.

Answer:

B. There are estimated to be over 50,000 different species.