How Did the Development of the Jaw Contribute to Evolutionary

question 30

Multiple Choice

How did the development of the jaw contribute to evolutionary diversification of early vertebrate lineages?

• A) It allowed vertebrates to grow a bony skull.
• B) It allowed for more modes of communication.
• C) It increased their mobility.
• D) It provided for an appreciation of a wider variety of foods.
• E) It allowed vertebrates to feed on a wider variety of food sources.

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Total Profit

The total income of a business after all expenses and costs have been deducted from its total revenue.

Optimum Efficiency

The state in which resources are allocated in the most efficient manner possible, maximizing outputs while minimizing wastes and costs.

Perfect Competitor

An idealized market structure in which many firms produce identical products, entry and exit are easy, and all participants have perfect information.

Long Run

A period in economics in which all factors of production and costs are variable, allowing for full adjustment to change.