The Cambrian Explosion Not Only Produced an Abundance of New

question 40

Multiple Choice

The Cambrian explosion not only produced an abundance of new animal species but also gave rise to the first shells,spines,and active swimmers.This suggests the important influence of ____________ in driving animal evolution.

• A)photosynthetic organisms
• B)atmospheric oxygen
• C)carnivorous predators
• D)filter-feeding organisms

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Definitions:

Bystander Effect

The tendency for any given bystander to be less likely to give aid if other bystanders are present.

Deindividuation

A psychological state where individuals lose their self-awareness and sense of individuality in groups, often leading to uninhibited and sometimes antisocial behavior.

Social Identities

Aspects of an individual's self-concept derived from their perceived membership in social groups such as nationality, ethnicity, gender, and social class.

Superordinate Goals

Shared goals that necessitate cooperative effort; goals that transcend individual differences and can only be achieved by working together.