Answer:
The answer is Kastle-Meyer test..
The atom? gas? either one of those two would work
The Great Barrier Reef is one of the most sought-after scuba diving spots in the entire world, with phenomenal coral beds that are flooded with light and sea life.
The concept would be crystallization. As magma cools inside or outside of the earth it crystallizes into an igneous rock. Intrusive (formed inside crust) igneous rocks are typically more course grained and contain many different noticeable minerals (for example, granite). Extrusive (formed outside) igneous rocks are typically more porous and are more fine grained then intrusive rocks (example, obsidian).
