Research Ecologists Often Specialize in One Level of Ecology

question 62

Multiple Choice

Research ecologists often specialize in one level of ecology.Which question would most likely be studied by a Yellowstone National Park ecologist specializing in biogeochemical cycles in ecosystems?

• A) What is the sex ratio of the elk living in the park?
• B) How does nitrogen move among the organisms, soil, water, air, and rocks of the park?
• C) How does the reintroduction of wolves influence other large mammal populations in the park?
• D) What types of species interactions occur among the major species in the park's food webs?
• E) What geological history led to the development of the park's environment?

Comprehend the structure and functions of the peripheral nervous system.

Recognize the physiological responses to stimuli and the mechanisms behind them.

Identify characteristics and functions of reflex actions.

Analyze the stages of sleep and their physiological characteristics.

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Definitions:

Generations

Groups of individuals, typically within a society, born and living at about the same time, known for having shared experiences.

Content Validity

The extent to which a test or measurement accurately represents the construct it is intended to measure, covering all relevant facets.

Predictive Validity

The extent to which a test accurately forecasts a specific future outcome.

Concurrent Validity

The degree to which the results of a particular test correlate with those of another established measure given at the same time.