arm-water gyre (broad, circular system of
currents) in the northern Atlantic, counterclockwise warm-water gyre
in the southern Atlantic; the ocean floor is dominated by the
Mid-Atlantic Ridge, a rugged north-south centerline for the entire
Atlantic basin

Australia
mostly low plateau with deserts; fertile plain in southeast

Austria
in the west and south mostly mountains (Alps); along the
eastern and northern margins mostly flat or gently sloping

Azerbaijan
large, flat Kur-Araz Ovaligi (Kura-Araks Lowland) (much
of it below sea level) with Great Caucasus Mountains to the north,
Qarabag Yaylasi (Karabakh Upland) in west; Baku lies on Abseron
Yasaqligi (Apsheron Peninsula) that juts into Caspian Sea

Bahamas, The
long, flat coral formations with some low rounded hills

Bahrain
mostly low desert plain rising gently to low central
escarpment

Baker Island
low, nearly level coral island surrounded by a narrow
fringing reef

Bangladesh
mostly flat alluvial plain; hilly in southeast

Barbados
relatively flat; rises gently to central highland region

Bassas da India
volcanic rock

Belarus
generally flat and contains much marshland

Belgium
flat coastal plains in northwest, central rolling hills,
rugged mountains of Ardennes Forest in southeast

Belize
flat, swampy coastal plain; low mountains in south

Benin
mostly flat to undulating plain; some hills and low mountains

Bermuda
low hills separated by fertile depressions

Bhutan
mostly mountainous with some fertile valleys and savanna

Bolivia
rugged Andes Mountains with a highland plateau (Altiplano),
hills, lowland plains of the Amazon Basin

Bosnia and Herzegovina
mountains and valleys

Botswana
predominantly flat to gently rolling tableland; Kalahari
Desert in southwest

Bouvet Island
volcanic; coast is mostly inaccessible

Brazil
mostly flat to rolling lowlands in north; some plains, hills,
mountains, and narrow coastal belt

British Indian Ocean Territory
flat and low (most areas do not
exceed four meters in elevation)

British Virgin Islands
coral islands relatively flat; volcanic
islands steep, hilly

Brunei
flat coastal plain rises to mountains in east; hilly lowland
in west

Bulgaria
mostly mountains with lowlands in north and southeast

Burkina Faso
mostly flat to dissected, undulating plains; hills in
west and southeast

Bur