ipe, Seychelles, Singapore,
Solomon Islands, South Georgia and the South Sandwich Islands,
Spratly Islands, Sri Lanka, Svalbard, Tokelau, Tonga, Trinidad and
Tobago, Tromelin Island, Turks and Caicos Islands, Tuvalu, Vanuatu,
Virgin Islands, Wake Island, Wallis and Futuna, Taiwan

Maritime claims:
a variety of situations exist, but in general, most countries make
the following claims measured from the mean low-tide baseline as
described in the 1982 UN Convention on the Law of the Sea:
territorial sea - 12 nm, contiguous zone - 24 nm, and exclusive
economic zone - 200 nm; additional zones provide for exploitation of
continental shelf resources and an exclusive fishing zone; boundary
situations with neighboring states prevent many countries from
extending their fishing or economic zones to a full 200nm

Climate:
a wide equatorial band of hot and humid tropical climates -
bordered north and south by subtropical temperate zones - that
separate two large areas of cold and dry polar climates

Terrain:
the greatest ocean depth is the Mariana Trench at 10,924 m in the
Pacific Ocean

Elevation extremes:
lowest point: Bentley Subglacial Trench -2,540 m
note: in the oceanic realm, Challenger Deep in the Mariana Trench is
the lowest point, lying -10,924 m below the surface of the Pacific
Ocean
highest point: Mount Everest 8,850 m

Natural resources:
the rapid depletion of nonrenewable mineral resources, the
depletion of forest areas and wetlands, the extinction of animal and
plant species, and the deterioration in air and water quality
(especially in Eastern Europe, the former USSR, and China) pose
serious long-term problems that governments and peoples are only
beginning to address

Land use:
arable land: 13.31%
permanent crops: 4.71%
other: 81.98% (2005)

Irrigated land:
2,770,980 sq km (2003)

Natural hazards:
large areas subject to severe weather (tropical cyclones), natural
disasters (earthquakes, landslides, tsunamis, volcanic eruptions)

Environment - current issues:
large areas subject to overpopulation, industrial disasters,
pollution (air, water, acid rain, toxic substances), loss of
vegetation (overgrazing, deforestation, desertification), loss of
wildlife, soil degradation, soil depletion, erosion

Geography - note:
the world is now thought to be about 4.55 billion years old, just
about one-third of the 13-billion-year