From Rocks Formed at the Time of the Archean-Proterozoic Transition

question 22

Multiple Choice

From rocks formed at the time of the Archean-Proterozoic transition (2.5 billion years ago) , there is evidence

• A) that an abrupt change in the nature of life on Earth had occurred.
• B) of a decline in the offshore, cone-shaped cyanobacterial mounds.
• C) of an abrupt increase in the growth of stromatolites produced by cyanobacteria.
• D) that eukaryotic algae existed, but cyanobacteria remained more abundant.

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Definitions:

Emotionally Attracted

A form of attraction where an individual feels emotionally drawn to someone, creating a sense of connection based on feelings, personality, and intimacy.

Romantic Love

A deep emotional and passionate affection for another person, often associated with desire and attachment.

Consummate Love

A type of love described by psychologist Robert Sternberg as having three components: intimacy, passion, and commitment.

Commitment

A dedication or obligation that restricts freedom of action.