What Is Probably the Most Important Factor in the Health

question 31

Multiple Choice

What is probably the most important factor in the health of most ecosystems?

• A) the amount of calcium in the soil
• B) the amount of potassium in the soil
• C) availability of clean water
• D) the length of daylight hours
• E) how often hurricanes strike

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Definitions:

Adaptation

The process by which a species becomes fitted to its environment; it is the result of natural selection acting upon heritable variation over several generations.

Physiological Responses

The body's automatic reactions to a stimulus, including heart rate, hormone secretion, and muscle tension, among others.

Social Readjustment

The process of adapting to significant changes in one's life situation or societal roles, which can be a source of stress or personal growth.

Rating Scale

A set of categories designed to elicit information about a quantitative or a qualitative attribute.