Absolute Dating Uses ________ to Estimate How Old a Fossil

question 47

Multiple Choice

Absolute dating uses ________ to estimate how old a fossil is.

• A) depth within rock layers
• B) radioactive isotopes
• C) a molecular clock
• D) structural features
• E) embryonic structures

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Definitions:

Dependent Variable

The variable in an experiment that is observed and expected to change as a result of manipulations in the independent variable.

Independent Variable

In scientific research, the variable that is manipulated or changed by the researcher to observe its effects on the dependent variable.

Correlation Coefficient

A numerical index of the degree of relationship that exists between two variables.

Strength

The quality or state of being physically strong, as well as a person's mental or emotional ability to deal with difficult situations.