In the Studies by David Tilman of the University of Minnesota

question 18

Multiple Choice

In the studies by David Tilman of the University of Minnesota and John Downing of the University of Iowa, reported in the journal Nature in 1994, they established and monitored 207 plots of Minnesota grasslands for seven years. During the study period, Minnesota's worst drought in 50 years occurred (1987-1988) . The ecologists found that those plots with the greatest number of plant species lost ____ ground cover, as measured by dry weight, and recovered faster than species-poor plots.

• A) less
• B) more
• C) no detectable
• D) only deciduous
• E) detectable

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Definitions:

Behavior Problems

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Eighth Grade

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Orderly Environment

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