| Terrain Tonga :
| most islands have limestone base formed from uplifted coral formation; others have limestone overlying volcanic base
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| Natural hazards Tonga :
| cyclones (October to April); earthquakes and volcanic activity on Fonuafo'ou
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| Environment current issues Tonga :
| deforestation results as more and more land is being cleared for agriculture and settlement; some damage to coral reefs from starfish and indiscriminate coral and shell collectors; overhunting threatens native sea turtle populations
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| Environment international agreements party to Tonga :
| Biodiversity, Climate Change, Desertification, Law of the Sea, Marine Dumping, Marine Life Conservation, Ozone Layer Protection, Ship Pollution
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| Geography note Tonga :
| archipelago of 169 islands (36 inhabited)
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| Flag description Tonga :
| red with a bold red cross on a white rectangle in the upper hoist-side corner
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| Agriculture products Tonga :
| squash, coconuts, copra, bananas, vanilla beans, cocoa, coffee, ginger, black pepper; fish
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| Industries Tonga :
| tourism, fishing
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