A Review of the Trends in Labor Productivity Growth in the U.S

question 84

Multiple Choice

A review of the trends in labor productivity growth in the U.S. for the periods 1973-1995, 1995- 2010, and 2010-2018 suggests which of the following patterns?

• A) a persistently strong growth averaging about 2.5 percent per year throughout the three periods
• B) an initial strong growth averaging 2.5 percent per year in the period 1973-1995, followed by weak growth in 1995-2010, and a sharp rise again in 2010-2018
• C) an initial modest growth averaging 1.5 percent per year in 1973-1995, followed by much higher growth in 1995-2010, then a collapse to very slow growth in 2010-2018
• D) a relatively steady and modest growth throughout all three periods, averaging about 1.5 percent

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Definitions:

Exotic Species

Species that are introduced to a new environment where they do not naturally occur, often leading to environmental changes and potentially becoming invasive species.

Keystone Species

This term refers to a species that plays a critical role in maintaining the structure of an ecological community and whose impact on the ecosystem is disproportionately large relative to its abundance.

Pioneer Species

First organisms to colonize previously disrupted or damaged ecosystems, beginning a chain of ecological succession that ultimately leads to a more biodiverse steady-state ecosystem.

Invasive Species

Non-native species that spread rapidly in a new ecosystem, often causing harm to native species and their habitats.