Earthworms Live in Many Grass and Forest Ecosystems, and They

question 36

Multiple Choice

Earthworms live in many grass and forest ecosystems, and they aerate the soil as they burrow. They also may mix soil layers as they ingest organic matter and travel between layers. These traits, taken collectively, make up the_________ of the earthworm.

• A) ecosystem profile
• B) community profile
• C) resource partition profile
• D) physical home
• E) niche

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Definitions:

Oligopolistic Industry

An industry characterized by a small number of firms that have significant control over market prices and high barriers to entry.

Collusion

Collusion is an agreement between two or more parties, often in secret, to limit open competition by deceiving, misleading, or defrauding others of their legal rights, or to obtain an objective forbidden by law typically involving fraud or gaining an unfair market advantage.

Cartels

An agreement between competing firms to control prices or exclude entry of a new competitor in a market, often resulting in higher prices and restricted competition.

Informal Understandings

Unofficial agreements or practices among firms or individuals that dictate behavior without being legally binding.