Mass Extinctions Remove Dominant Groups of Organisms and Thus Provide

question 69

Multiple Choice

Mass extinctions remove dominant groups of organisms and thus provide new ecological and evolutionary opportunities for groups of organisms that were previously of little importance.These organisms can then fill the now existing niches through the process of ___________.

• A) directed mutation
• B) cloning
• C) mitosis
• D) adaptive radiation

---

Definitions:

Agoraphobia

An anxiety disorder characterized by an intense fear of being in places where escape might be difficult or help might not be available, often leading to avoidance behaviors.

Obsessive-Compulsive Disorder

A mental health condition characterized by unwanted, repetitive thoughts and behaviors that the person feels the need to perform.

Cognitive-Behavioral Theorists

Psychologists or professionals who advocate for cognitive-behavioral therapy (CBT), a form of psychotherapy that treats problems and boosts happiness by modifying dysfunctional emotions, behaviors, and thoughts.

Excoriation Disorder

A disorder in which persons repeatedly pick at their skin, resulting in significant sores or wounds. Also called skin-picking disorder.