The Oldest Fossil Organisms Presently Known Have Been Dated at Approximately

question 121

Multiple Choice

The oldest fossil organisms presently known have been dated at approximately how many years old?

• A) 1.7 billion
• B) more than 4.5 billion
• C) 3.4 billion
• D) less than 1.7 billion
• E) 4.5 billion

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Definitions:

Adoption Studies

Research that compares biologically related people, including twins, who have been reared either separately or together, to understand genetic and environmental influences.

Genetics

The study of heredity and the variation of inherited characteristics.

Biological Relatives

Family members who are related by blood, such as parents, siblings, and offspring, sharing genetic material.

Human Laboratory Studies

Experimental research conducted in controlled lab settings, often involving human participants to understand various aspects of behavior, cognition, and physiology.