What does it mean to cite textual evidence and how
does evidence help an argument?

Show where you found your evidence

Explanation:

Show where you found your evidence at and how does your evidence help in argument. Like who was the first president of the United States. You looked it up, find you evidence to help you in argument, and explain where you got that evidence. Makes a little sense?

usually, a falcon can kill an owl, and horses don't normally eat each other.