Estrogen's are the female sex hormones. <span />
The primary consumers ( herbivores ) feed directly on producers. The secondary consumers ( carnivores ) feed on the primary consumers and the tertiary consumers feed on the secondary consumers.
The secondary consumers would increase as the tertiary consumers would not be present. Finally, as a result, a number of the primary consumers would decrease.
Its' A, I believe.
Hoped this helped.
Bob Ross®
