A Certain Species of Pine Tree Survives Only in Scattered

question 46

Multiple Choice

A certain species of pine tree survives only in scattered locations at elevations above 2,800 m in the western United States. To understand why this tree grows only in these specific places, an ecologist should

• A) conclude that lower elevations are limiting to the survival of this species.
• B) study the anatomy and physiology of this species.
• C) investigate the various biotic and abiotic factors that are unique to high altitude.
• D) analyze the soils found in the vicinity of these trees, looking for unique chemicals that may support their growth.
• E) collect data on temperature, wind, and precipitation at several of these locations for a year.

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