All flowering plants are gymnosperns true or false

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

Write down two additional questions about earth's magnetic field that will make your presentation more informative.