Tonga
most islands have limestone base formed from uplifted coral
formation; others have limestone overlying volcanic base
Trinidad and Tobago
mostly plains with some hills and low mountains
Tromelin Island
low, flat, and sandy; likely volcanic
Tunisia
mountains in north; hot, dry central plain; semiarid south
merges into the Sahara
Turkey
high central plateau (Anatolia); narrow coastal plain;
several mountain ranges
Turkmenistan
flat-to-rolling sandy desert with dunes rising to
mountains in the south; low mountains along border with Iran;
borders Caspian Sea in west
Turks and Caicos Islands low, flat limestone; extensive marshes and mangrove swamps
Tuvalu
very low-lying and narrow coral atolls
Uganda
mostly plateau with rim of mountains
Ukraine
most of Ukraine consists of fertile plains (steppes) and
plateaus, mountains being found only in the west (the Carpathians),
and in the Crimean Peninsula in the extreme south