According to the Supercontinent Model, ____

question 29

Multiple Choice

According to the supercontinent model, ____.

• A) at some future time, all continents will join together in a single supercontinent, and tectonic activity will cease
• B) continental fragments have migrated around the globe and reassembled as a supercontinent at least three times in Earth's history
• C) the breakup of a future supercontinent will lead to the destruction of all continental crust in subduction zones
• D) all the geologic areas within a supercontinent have the same radiometric age

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Definitions:

Hyperpolarized

describes a state where a neuron's membrane potential becomes more negative than its resting potential, making it less likely to fire an action potential.

Transmitter Substances

Chemicals released by nerve cells to transmit signals across a synapse to another nerve, muscle, or gland cell.

Serotonin

A neurotransmitter in the brain that plays a significant role in mood regulation, sleep, and other physiological functions.

Agonists

Drugs that enhance a neurotransmitter’s activity.