The Fossil Record Indicates That Species Have Become Extinct Throughout

question 82

Short Answer

The fossil record indicates that species have become extinct throughout the history of life.There have been five ________,during which greater than 50 percent of Earth's species became extinct.

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Definitions:

Sensation

The process by which sensory receptors and the nervous system receive and represent stimulus energies from our environment.

Bottom-Up Processing

An approach where perception begins with the stimuli whose reception is made by sensory receptors, leading to higher-level processing.

Top-Down Processing

A cognitive process that uses an individual's background knowledge to influence perception.

Superman

A fictional superhero character created by Jerry Siegel and Joe Shuster, appearing in American comic books published by DC Comics, known for his superhuman abilities.