I think A but you should double check with some one else.
Answer:
Explanation:
Certain types of volcanic ash do not dissolve easily in water. Instead, they clump on the surface of the ocean in pumice rafts. These rafts can clog salt water intake strainers very quickly, which can result in overheating of shipboard machinery dependent on sea water service cooling.
Citizens of Rome would gather at an assembly to elect their own officials. The chief officials of Rome were called consuls and there were two of them. The consuls governed for a year. ... Ten “Tribunes of the People” were also elected to look after the poor of Rome.
The graph table population is continuously increasing until 2007
There's a lot of compounds but one really known one is H2O because it's made out of hydrogen and oxygen atoms.