Water! (abiotic)
If water runs out then everything dies! :)
Thanks for the opportunity to answer your question and I hope this help! :)
The system is called Taxonomy and was made by Swedish botanist Carlous Linnaeus
Answer:
3215 F would be the platinum melting point.
it boiling point is 6917 F.
Explanation:
There is not much to explain other then heat melts metals when high enough, I know this because I own a forge and platinum is one thing I use for melting.
If you're talking about eukaryotic cells then it's the cell wall. If it's a prokaryotic cell sometimes the slime layer secreted by some bacteria may harden and form a capsule around the bacterial cell.
Hope i helped!