Past Surface Temperature Can Be Determined from Vostok Ice Cores

question 12

Multiple Choice

Past surface temperature can be determined from Vostok ice cores by

• A) pollen counts
• B) tree rings
• C) oxygen isotope ratios
• D) gas temperatures

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Definitions:

Koch's Postulates

A set of four criteria designed to establish a causative relationship between a microbe and a disease.

Pathogen

An organism, usually a microorganism, capable of producing disease.

Disease Symptoms

Observable effects experienced by an individual resulting from a disease, which can include fever, fatigue, pain, and other physical and psychological changes.

Ether Linkages

Chemical bonds in which an oxygen atom connects two alkyl or aryl groups, commonly found in organic compounds and lipids like phospholipids.