Is the word “down” a preposition or an adverb in the following sentence: “when the battery ran down, the clock stopped”

is the word “down” a preposition or an adverb in the following sentence:
“the mouse ran down the clock”

please explain why :) i’m horrible at grammar

What is the best way to combine these sentences?

Which statements describe postapocalyptic fiction? check all that apply. it considers humanity and survival. it shows the results of a disastrous event. it focuses on laws and theories of science. it occurs after the end of one world or society. it highlights the role of technology on humanity. it investigates the impact that historical disasters had on people.

The first step in synthesizing is to ?