Answer:
the universe is expanding and will continue to expand
Explanation:
The Big Bang Theory is a theory that the universe started as an an infinitely hot and dense single point that inflated and stretched out.
Because the top layer of a pool will be warmer than the bottom layer, that why filtration is important to cycle the water evenly.
Answer:
B. Medium
Explanation:
I don't know how to explain it but I already did this lesson in school
Average speed =
(distance covered during some period of time)
divided by
(length of time to cover that distance).