D most likely because we can then learn if the animal gets affected by the amount of whatever you use or not.
Write a personal experience or event that has happened in the past.
Humanity is powerless to do anything against the forces of time and nature. And that the life is too brief to be wasted.T<span>he lives of the hollow men are empty—void of spirituality or meaning. And also one paradox about the hollow men is that they are hollow and stuffed.</span>
I think it is C. It is a short work of nonfiction that explains something in an amusing way.
My and mine. Are possessive.