Increasing Ratios of Oxygen-18 to Oxygen-16 in Glacial Ice Indicate

question 1

Multiple Choice

Increasing ratios of oxygen-18 to oxygen-16 in glacial ice indicate ________.

• A) advancing ice sheets
• B) warming temperatures
• C) increased volcanic emissions
• D) uplift of land surfaces

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Definitions:

Erie Canal

A historic canal in New York, completed in 1825, which played a critical role in the commercial expansion of the United States.

Lake Erie

One of the five Great Lakes in North America, bordered by Ontario, Canada, and several U.S. states, known for its fisheries, recreation, and historical significance in trade and transportation.

Hudson River

A major river in New York State that flows from the Adirondack Mountains down to New York City, historically significant for trade and transportation.

Market Economy

An economic system where supply and demand from consumers drive the production and pricing of goods and services.