Glossary

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Keystone Species
A certain species that one or more other species are dependent upon for food, reproduction, or some other basic need.

Kyoto Protocol
From December 1 through 11, 1997, more than 160 nations met in Kyoto, Japan, to negotiate binding limitations on greenhouse gases for the developed nations, pursuant to the objectives of the Framework Convention on Climate Change of 1992. The outcome of the meeting was the Kyoto Protocol, in which the developed nations agreed to limit their greenhouse gas emissions, relative to the levels emitted in 1990. The United States' target is to reduce emissions from 1990 levels by 7 percent during the period 2008 to 2012.