I'm not one hundred percent sure but I think that they were facilitated by rivers.
Answer:
It is important to use credible sources in an academic research paper because your audience will expect you to have backed up your assertions with credible evidence. ... Using evidence that does not come from a credible source of information will not convince your reader that your claim is plausible or even correct.
Explanation:
I got it from Google and Google is always right lol.
The fact that you posted no answer choices to select and that your question requires answer choices causes frustration.
Answer:
If u go for a run early in the morning then you might have eaten a sandwich for dinner last night. If you forget about last night then you might consider taking a light breakfast before thinking when to schedule your run. In any case, givrn the data presented above, one shoudn't eat more then two sanwiches a day when combined with energy drinks like orange juice