Some Aleutian Islands Are Surrounded by Urchin Barrens While Others

question 18

Multiple Choice

Some Aleutian Islands are surrounded by urchin barrens while others are surrounded by kelp forests. Which statement gives the primary explanation for these differences?

• A) Kelp forest islands and urchin barren islands differ with respect to oceanic currents.
• B) Kelp eat urchins, thus preventing their establishment.
• C) The kelp forest islands experience a substantially warmer climate than do the urchin barren islands.
• D) Grazing by urchins prevents the formation of kelp forests.

---

Definitions:

Delegating Style

A management approach where authority and tasks are transferred to lower-level employees, promoting responsibility and decision-making at all levels.

Hersey-Blanchard

A situational leadership model proposing that effective leadership is dependent on the task readiness of the followers.

High-Readiness

The state of being fully prepared and able to respond quickly and effectively to changes or opportunities.

Telling Style

A communication approach where information is explicitly stated or instructed without the need for feedback from the listener.