The Cambrian Explosion Occurred Primarily in the Oceans

question 93

Multiple Choice

The Cambrian explosion occurred primarily in the oceans.The first challenges that had to be overcome during the mass colonization of dry land in the Ordovician period were

• A) support of body structure without buoyancy in water, movement, and reproduction.
• B) photosynthesis, cellular respiration, and reproduction.
• C) DNA replication, photosynthesis, and cellular respiration.
• D) DNA replication, phagocytosis, and cellular respiration.

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Definitions:

Environmental Degradation

The deterioration of the environment through depletion of resources, destruction of ecosystems, and extinction of wildlife.

Social Inequality

A condition where societal resources, opportunities, and privileges are distributed unequally among people in a society.

Living Standards

The level of wealth, comfort, material goods, and necessities available to a certain socioeconomic class or geographic area.

Worker Autonomy

The degree to which employees have the freedom, independence, and discretion in scheduling their work and determining the procedures carried out in their jobs.