Answer:
The United States customary system aka USCS or USC?
The answer is Sliver reacts with nitric acid to produce a gas.
Answer:
The top ocean layer tends to be the warmest layer due to heating from the sun.
Bonus+ : This is also the reason why oceans and sea's don't freeze(well except in the poles, no sun warmth avaliable there)
Answer:
aluminium is all of isotope with 14 neutrons .