Protogyny is what? a. male first, female later b. female first, male later c. male only d. female only​

look at the explanation

Explanation: Protogyny occurs in organisms that are born female and at some point of their life span change sex to males. ... In consequence, protogyny arises when small males are prevented from mating with females by larger males, making it advantageous to become male when a competitive larger size is reached (Warner, 1988).

organisms that are both used in toothpaste as well as cause malaria are protista and monera.