Can you tell which one of the four examples corresponds to the making of a hydrocarbon fuel from CO2 and water?

This active feature of earth's crust in building mountain ranges as well as islands. this feature is a a) cavern. b) earthquake. c) mountain. d) volcano.

Stage in which a typical star has completely stopped fusion

Suppose that some of the compound spilled out of the crucible after it was heated. would that cause the percent by mass of water in the compound determined by the experiment to be too low, too high, or unchanged? briefly explain your answer.