Answer:
Subbituminous coal can form at temperatures as low as 35 to 80 °C (95 to 176 °F) while anthracite requires a temperature of at least 180 to 245 °C (356 to 473 °F).
Sub-types: Cannel coal
Child material class: Lignite
Explanation:
It'd be a physical change. This is because it's a change in the state of matter and not altering the chemical structure of water
Answer: Water because if we say aqueous it means it resembles water or related to water.