Match the following zones of biosphere reserve with its respective functions:
1-ii,2-iii,3-i
In order to satisfy UNESCO's program requirements, each biosphere reserve must contain three elements:
Core Areas: These areas are securely protected sites for conserving biological diversity, monitoring minimally disturbed ecosystems, and undertaking non-destructive research and other low-impact uses (such as education).
Buffer Zones: These areas must be clearly identified, and usually surround or adjoin the Core Areas. Buffer Zones may be used for cooperative activities compatible with sound ecological practices, including environmental education, recreation, ecotourism and applied and basic research.
Transition Zones: These areas may contain towns, farms, fisheries, and other human activities and are the areas where local communities, management agencies, scientists, non-governmental organizations, cultural groups, economic interests, and other stakeholders work together to manage and sustainably develop the area's resources.
The zone concept is designed to be flexible and may be implemented in a variety of ways in order to address local needs and conditions.