The Deepest Penetration by Humans into the Earth's Crust Is

question 28

Multiple Choice

The deepest penetration by humans into the Earth's crust is a drill core about ______kilometers deep.

• A) 6,702
• B) 31
• C) 360
• D) 0.5
• E) 12

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Definitions:

Ego

In psychology, a component of Sigmund Freud's model of the psyche that represents the self, or the part of one's identity that mediates between the desires of the id and the constraints of the social environment.

Id

A part of the mind in Freudian psychoanalysis that is responsible for instinctual desires and drives.

Libido

The energy of the sexual drive as a component of the life instinct.

Superego

In psychoanalytic theory, the part of the personality that acts as a moral center, enforcing ethical conduct and societal norms.