When the Earth cooled from being hot, all the iron and nickel was concentrated inside the Earth forming the inner two layers, inner solid core and outer liquid core. Then with the passage of time the Earth solidified gradually and the mantle solidified and now at this stage the Earth's crust, the outer most part of the Earth, looks like it's final product (the way it does now).
Friar is concerned that they might be moving too hastily.
Answer: D
explanation: A persuasive essay is to do just that, persuade. Persuade means to push someone into agreeing to something or with someone. Even in this essay, you must still explain both sides. So all of these answers are correct.
An appeal to potential benefits, I think.
