In more general philosophical terms, normative science is a form of inquiry, typically involving a community of inquiry and its accumulated body of provisional knowledge, that seeks to discover good ways of achieving recognized aims, ends, goals, objectives, or purposes.[5][6] Many political debates revolve around arguments over which of the many "good ways" shall be selected.[7] For example, when presented as scientific information, words such as ecosystem health, biological integrity, and environmental degradation are typically examples of normative science because they each presuppose a policy preference and are therefore a type of policy advocacy.[8][9]