Theories Are Defined as

question 639

Multiple Choice

Theories are defined as

• A)testable propositions.
• B)factors that may change in response to manipulation.
• C)statistical indexes.
• D)principles that help to organize observations and predict behaviors or events.

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Definitions:

Environmental Integrity

The maintenance of the world's physical, biological, and chemical environments to sustain ecosystem health and function.

Centenarians

People who have reached the age of 100 years or older, a milestone achieved by a small fraction of the population.

Ecological Footprint

An estimation of the land and water area required to produce all the goods an individual consumes and to assimilate all the waste an individual generates.

Public Transportation

A system of vehicles such as buses and trains that operate at regular times on fixed routes and are available for use by the public.