Astronomers have observed that the universe is expanding and is accelerating in all directions. using this evidence, astronomers have hypothesized that a huge explosion called the big bang created the universe. which of the following correctly describes the big bang?
theory
fact
opinion
none of these

The answer is THEORY cause that's the right answer.

(d) rivers.

explanation:

civilizations developed around rivers because their waters provided places to hunt and fish. also, as the rivers flooded, the lands around them became fertile. this allowed them to support farming. this is especially true of the nile river, which flooded the same time each year.