The Decline of Cyanobacteria in the Early Cambrian Oceans Was

question 4

Multiple Choice

The decline of cyanobacteria in the early Cambrian oceans was most likely related to

• A)the movement of animals onto land.
• B)the evolution of land plants.
• C)an increase in the number of predatory fish.
• D)an increase in organisms with suspension-feeding mouthparts.
• E)a decline in the number of marine decomposers.

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Definitions:

Price Elasticity

A measure of how much the quantity demanded of a good responds to a change in its price.

Quantity Sold

The total number of units of a product or service that have been purchased in a given period.

Price Elasticity

A measure of how much the quantity demanded or supplied of a good changes in response to a change in its price.

Demand Curve

A visual chart that illustrates how the quantity of a product or service desired by buyers varies with its price.