What force caused the dust and particles to clump together?
A. Gravity
B. Inertia

What does a particular point on a line of a phase diagram represent? o a. the maximum temperature a substance can exist at without bonds breaking b. the pressure created by the kinetic energy of molecules at a particular temperature c. the melting point or boiling point of a substance at a specific pressure d. the conditions in which temperature and pressure have equal effects on a substance

Compare and contrast physical changes with chemical changes.

In 2002, the rare earth elements mine in mountain pass, california was closed because