Discuss the possible role of protozoans in the evolution of animals

While protozoans evolved early and have survived to the present day as unicellular organisms, they have undoubtedly undergone considerable evolutionary change. So the role they have is rather big because they where here from early days. Animals could of adopted and learned from them

Explanation:

answer; i believe that the correct answer is(d) nondisjunction during meiosis;

c.more precipitation,but only when emission levels.