Which of the Following Statements About Biogeochemical Cycles Is True

question 26

Multiple Choice

Which of the following statements about biogeochemical cycles is true

• A)Not all living microbes require carbon.
• B)Nitrogen fixing bacteria must be in association with legumes.
• C)Thiobacillus oxidizes hydrogen sulfide to sulfuric acid.
• D)Cyanobacteria are the primary symbiotic nitrogen fixer.

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Definitions:

Extinction

In psychology, the gradual weakening and eventual disappearance of a learned response when it is no longer reinforced.

Classical Conditioning

A cognitive process where two stimuli are repeatedly linked together; the response, first elicited by the second stimulus, is finally elicited by the first stimulus.

Antecedent

An event, condition, or stimulus that precedes and potentially leads to a behavioral response or psychological outcome.

Fingernails

Hard, keratinous plates covering the dorsal surface of the terminal portions of fingers and toes, serving protective and functional purposes.