Answer:
donde estan las preguntas
Explanation:
Partly enclosed area with saline water
Answer: Water
Explanation: I don't see any graph attached, but water has a boiling point of 100C, which is where it would become gas, or water vapor. 0C is the freezing point of water, where it would become ice. Since 50C is in the middle, it would be considered liquid.
Mercury bc it is melting and getting closer
It would be atomic masses of the same atoms, and that atoms will be isotopes.
