Why Do Some Very Large Impact Craters Have a Central

question 27

Essay

Why do some very large impact craters have a central peak?

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Definitions:

Tricyclic

A class of antidepressant drugs that block the reuptake of certain neurotransmitters, thus increasing their levels in the brain.

MAO Inhibitor

A class of drugs that inhibits the action of monoamine oxidase, an enzyme involved in breaking down neurotransmitters in the brain, used in treating depression.

Transcranial Magnetic Stimulation

A noninvasive procedure that uses magnetic fields to stimulate nerve cells in the brain, often used to treat depression and other conditions.

Symptoms Of Depression

Manifestations of depression that can include emotional symptoms such as persistent sadness, and physical symptoms like changes in sleep or appetite.