y limited natural resources and overcrowding are
contributing to emigration to New Zealand

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

Trinidad and Tobago
water pollution from agricultural chemicals,
industrial wastes, and raw sewage; oil pollution of beaches;
deforestation; soil erosion

Tromelin Island
NA

Tunisia
toxic and hazardous waste disposal is ineffective and poses
health risks; water pollution from raw sewage; limited natural fresh
water resources; deforestation; overgrazing; soil erosion;
desertification

Turkey
water pollution from dumping of chemicals and detergents; air
pollution, particularly in urban areas; deforestation; concern for
oil spills from increasing Bosporus ship traffic

Turkmenistan
contamination of soil and groundwater with agricultural
chemicals, pesticides; salination, water-logging of soil due to poor
irrigation methods; Caspian Sea pollution; diversion of a large
share of the flow of the Amu Darya into irrigation contributes to
that river's inability to replenish the Aral Sea; desertification

Turks and Caicos Islands
limited natural fresh water resources,
private cisterns collect rainwater

Tuvalu
since there are no streams or rivers and groundwater is not
potable, most water needs must be met by catchment systems with
storage facilities (the Japanese Government has built one
desalination plant and plans to build one other); beachhead erosion
because of the use of sand for building materials; excessive
clearance of forest undergrowth for use as fuel; damage to coral
reefs from the spread of the Crown of Thorns starfish; Tuvalu is
very concerned about global increases in greenhouse gas emissions
and their effect on rising sea levels, which threaten the country's
underground water table; in 2000, the government appealed to
Australia and New Zealand to take in Tuvaluans if rising sea levels
should make evacuation necessary

Uganda
draining of wetlands for agricultural use; deforestation;
overgrazing; soil erosion; water hyacinth infestation in Lake
Victoria; poaching is widespread

Ukraine
inadequate supplies of potable water; air and water
pollution; deforestation; radiation contamination in