How Do Mass Extinctions Differ from Background Extinctions

question 32

Multiple Choice

How do mass extinctions differ from background extinctions?

• A)Mass extinctions account for most species that have gone extinct in the history of life on Earth.
• B)It is now recognized that mass extinctions but not background extinctions are generally caused by asteroid impacts.
• C)Mass extinctions involve a relatively rapid extinction of a large proportion of organisms that were alive at that time.

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Definitions:

Phi Effect

A perceptual illusion where stationary objects shown in rapid succession are perceived as moving, used to explain motion in cinema and animations.

Binocular Rivalry

A phenomenon of visual perception in which perception alternates between different images presented to each eye.

Spatial Neglect

A neurological disorder characterized by a lack of awareness of one side of space, often after a brain injury.

Visual Consciousness

The awareness of visual perceptions, including the ability to recognize, categorize, and react to visual stimuli in one's environment.