Mass Extinctions

question 27

Multiple Choice

Mass extinctions

• A) remove many species, but they are usually replaced within a million years or less by an even greater diversity of life.
• B) mainly serve to "weed out" poorly adapted organisms and make room for new, better adapted species.
• C) remove well-adapted species and groups from the Earth, so that it may take millions of years for species diversity to recover.
• D) are caused by human activity and did not occur prior to the expansion of the Earth's human population.

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Definitions:

Inattentional Blindness

The psychological phenomenon where an individual fails to perceive an unexpected stimulus in plain sight due to the focus of attention elsewhere.

Task Difficulty

The level of challenge presented by a task, which can affect performance and engagement.

Attention

the act or state of applying the mind to something; the ability to closely and carefully listen, watch, or consider something or someone.

Automatic Processing

The performance of a task with little or no conscious thought, often as a result of repeated practice and learning.