Introduction of Alien or Exotic Species into New Ecosystems Can

question 50

Multiple Choice

Introduction of alien or exotic species into new ecosystems can occur by

• A) colonization.
• B) accidental transport.
• C) agriculture.
• D) horticulture.
• E) All of the answer choices describe ways alien species can be introduced to an ecosystem.

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Definitions:

Average Cost

The aggregate expense of manufacturing, when divided by the quantity of items made.

Marginal Costs

The price of generating one more unit of a product or service.

Marginal Productivity

The additional output generated by employing one more unit of a particular resource, while holding other inputs constant.

Returns to Scale

The rate at which production output increases in response to proportional increases in all inputs.