MtRainier,Washington,is Number One on the Danger List of Many Volcanologists

question 23

Multiple Choice

Mt.Rainier,Washington,is number one on the danger list of many volcanologists because of ____________.

• A)its great height
• B)its extensive glacial cap
• C)its frequent earthquakes
• D)its active hot-water spring systems,which have weakened the mountain internally
• E)All of the choices are correct.

---

Definitions:

Firing

The initiation of an action potential in neurons, leading to the transmission of an electrical signal along the neuron's axon.

Neuron

A specialized cell transmitting nerve impulses; a nerve cell.

Action Potential

A brief electrical charge that travels down a neuron, initiating neurotransmission and facilitating neural communication.

All Or None

A principle that states a neuron either fires with full strength or not at all, depending on whether the stimulus reaches a certain threshold.