Answer:
A. the atom is made up of the mostly empty space with tiny, dense, positively-charged nucleus.
Explanation:
It is B, it could also be D, but it is most likely B. Hope this helps.
21.2 if you want it rounded to the tenths place 21.23722628 if not
A) a spurt in the number of jellyfish because there will be a decreased number of turtles to feed on them
