Answer:
Its C!
Explanation:
NH3 and OH- are both a Brønsted-Lowry base, while H2O and NH4 are acids!
Hope this helped!
The downhill flow of soil and rock resulting from gravity best describes mass movement.
Answer:
Heat
Explanation:
Friction can help convert heat into kinetic energy and kinetic energy into heat. Friction can be thought of as particles from different objects hitting each other. Collisions transfer energy converting large scale movement (kinetic energy) into small scale movement (heat).