The First Primitive Organisms on Earth Came into Existence Approximately

question 12

Multiple Choice

The first primitive organisms on Earth came into existence approximately ________ years ago.

• A)10,000
• B)550 million
• C)3.8 billion
• D)4.6 billion

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Definitions:

Specific Phobia

An intense, irrational fear of a specific object, situation, or activity that leads to avoidance behavior.

Panic Disorder

A psychiatric disorder characterized by recurrent unexpected panic attacks—sudden periods of intense fear or discomfort that may include palpitations, sweating, and feelings of impending doom.

Obsessive-Compulsive Disorder

Obsessive-Compulsive Disorder (OCD) is a mental disorder characterized by recurrent, unwanted thoughts (obsessions) and/or repetitive behaviors (compulsions).

Seasonal Affective Disorder

A type of depression that occurs at a specific time of the year, usually during winter, when there is less natural sunlight.