I don't get what you are saying... Can you reword it?
D. layer B is younger than layer G.
Scientist typically use the international system of measurements, or the metric system. If you mean English as in England, then yes.<span> The United States' system of measurement is not usually used by scientists.</span>
D will because water just turns from liquid to a gas by adding heat. That is a physical change. The other equations are chemical changes.
