Recent Evidence from Polar Ice Core Analysis Shows That, Until

question 45

Multiple Choice

Recent evidence from polar ice core analysis shows that, until now, carbon dioxide levels have never exceeded _______________ ppm in the last 800,000 years.

• A)300
• B)25
• C)1000
• D)200
• E)500

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Definitions:

Population Decline

A decrease in the number of people in a population due to factors such as lower birth rates, higher death rates, or migration.

Technology

The application of scientific knowledge for practical purposes, especially in industry and in the development of innovations.

Labor Productivity

A measure of economic performance that compares the amount of goods and services produced with the hours worked to produce them.

Specializing

The process of focusing effort and resources on a limited number of activities to gain efficiency and expertise.