Iwant to write the answer down so answer it step by step

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.

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)