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Across 6. science of inventing, establishing, and maintaining habitats to conserve species diversity (2 Words) 8. species that has small number of individuals because of limited geography and human activity (2 Words) 9. instrumental value (2 Words) 10. tigers, polar bears, grey wolves, elephants (2 Words)

Down 1. smallest number of individuals necessary to ensure population survival (3 Words) 2. harmful effects from the presence of introduced species into ecosystems. (2 Words) 3. Acronym for the unsustainability of an ecosystem 4. undomesticated animals (2 Words) 5. fixed route that waterfowl follow in changes of the seasons 7. animals that are hunted for sport or food (2 Words)