The Following Statements About Community Structure and Interactions Are Correct

question 20

Multiple Choice

The following statements about community structure and interactions are correct, with the exception of which one?

• A)The trophic cascade model suggests that the lower trophic levels influence/control the higher trophic levels.
• B)High-diversity communities are often more resilient to invasive species than low-diversity communities.
• C)Communities show variation in the top-down and bottom-down community control.
• D)The dynamic stability hypothesis suggests that long food chains are less stable than low food chains.
• E)An organism that influences a community by changing its physical environment is referred to as an ecosystem engineer.

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Definitions:

High-Fowler's

A position where the patient is seated in a bed or chair with the backrest at 60 to 90 degrees, often used to improve breathing or for patients with certain medical conditions.

Unconscious Patient

A patient who is not awake or aware of their environment, often due to illness or injury.

Oral Hygiene

The practice of keeping the mouth clean to prevent dental problems and bad breath, involving brushing, flossing, and sometimes mouthwash.

Semi-Fowler's

A position where a patient lies on their back with the head and torso raised between 15 to 45 degrees.