Question

select all that apply which of the following is true of the protozoa? more than one answer may be correct. most are parasites. a few species are responsible for millions of human infections each year. most are harmless inhabitants of soil and water. they are genetically related to each other.

Explanation:

Protozoa are a diverse group. While a few species like Plasmodium (causing malaria) are responsible for millions of human infections annually. Most protozoa are harmless inhabitants of soil and water, not parasites. Also, protozoa are a polyphyletic group, not genetically closely - related to each other.

Answer:

B. A few species are responsible for millions of human infections each year.
C. Most are harmless inhabitants of soil and water.