How Does an Ecologist Determine the Presence of an Ecotone

question 31

Multiple Choice

How does an ecologist determine the presence of an ecotone?

• A) measure the abundance of plant species over space and abrupt changes in species composition
• B) perform controlled crosses among all plant species within a community to determine the extent to which the species are reproductively isolated
• C) measure microclimate and soil variables for abrupt changes
• D) measure elevation, since many environmental and ecological variables change with elevation

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Definitions:

Conditioned Stimulus

A previously neutral stimulus that, after becoming associated with an unconditioned stimulus, now elicits a conditioned response.

Classical Conditioning

A learning process that occurs through associations between an environmental stimulus and a naturally occurring stimulus, leading to learned responses.

Biological Needs

are the essential physiological requirements humans need to maintain life, such as food, water, shelter, and oxygen.

Timing

The selection, determination, or arrangement of specific times for events or actions.