Which of the following scenarios is representative of parasitism?

Which of the following scenarios is representative of parasitism?

a.

Tapeworms living in a mammal’s intestinal tract

b.

Remora fish attaching themselves to sharks

c.

Birds feeding on insects stirred up by grazing animals

d.

Birds eating scraps of food from a crocodile’s teeth

answer is A

the mantle

explanation:

earth is divided into three layers: the crust or the outermost layer on which we live; the underlying, middle layer - the mantle - and the core (the innermost layer of earth).