Venus and Earth Probably Formed with Similar Amounts of Carbon

question 51

Multiple Choice

Venus and Earth probably formed with similar amounts of carbon dioxide in their secondary atmospheres. Which of the following is TRUE?

• A) The majority of Earth's carbon dioxide escaped into space because of its hotter temperature, while Venus's carbon dioxide remains gravitationally bound to Venus.
• B) The majority of Earth's carbon is now bound up in rock while Venus's remains in its atmosphere.
• C) Earth lost more of its secondary atmosphere because it was bombarded by more planetesimals than Venus.
• D) The majority of Earth's carbon was absorbed by plants during photosynthesis.
• E) Earth and Venus still have equal amounts of carbon dioxide in their atmospheres.

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Definitions:

Instinctual Demands

Basic, innate urges or drives that motivate behavior, such as hunger, thirst, or the need for safety.

Freud

The founder of psychoanalysis known for his theories of the unconscious mind and the development of psychosexual stages.

Conscious

Having the awareness and capability to contemplate one's own life, perceptions, ideas, and everything around oneself.

Preconscious

Refers to thoughts or feelings that are not immediately in one's conscious awareness but can be easily accessed.