Current Scientific Estimates Indicate That Earth Is Approximately 4

question 3

Multiple Choice

Current scientific estimates indicate that Earth is approximately 4.5-4.6 ________ years old and that life began on Earth approximately 3.2-3.5 ________ years ago.

• A) billion; million
• B) million; million
• C) billion; billion
• D) million; billion

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Definitions:

Cognition

The cognitive activity of gaining understanding and knowledge by means of thinking, experiencing, and sensory perception.

Mental Activities

Processes related to the mind, such as thinking, reasoning, imagining, and remembering.

Remembering

The cognitive process of retrieving past experiences or information.

Prototype

An original model or initial version of something from which other forms are copied or developed.