What is the question that needs an answer?
The mantle layer is more dense closest to the core.
Answer:
Tara does not think that Victor’s predictions are likely.
Explanation:
In order to submit the paper, he would need to be as accurate as he possible can, is Tara told him to do it again, it means that he may have made a few mistakes.
Answer:
CaO + SO 3 → CaSO. 4
This is an acid-base reaction (neutralization): CaO is a base, SO 3 is an acid.