Given scientific fact as input, generate the question from this fact such that it can be answered from the input.
--------
Question: Landslides moving loose rocks downhill process is the best example of a sudden change to earth’s surface.

Answer: Which process is the best example of a sudden change to Earth’s surface?


Question: Mechanical waves term describes waves that travel through matter.

Answer: What term describes waves that travel through matter?


Question: Because action potentials are so brief, a neuron can produce hundreds per second.

Answer:
Because action potentials are so brief, a neuron can produce hundreds per what?