locations there are annual hot-air balloon
festivals featuring hundreds of colorful
balloons.
Colorful hot-air balloons soar
above Albuquerque, New
Mexico.
16 Balloon BRITANNICA STUDENT ENCYCLOPEDIA
Baltic Sea
An arm of the Atlantic Ocean, the Baltic
is a shallow sea in northern Europe. For
a sea, the Baltic does not have very salty
water. Several rivers, including the Oder
and the Vistula, drain into the sea. The
huge flow of fresh river water keeps the
Baltic from getting too salty.
The Baltic Sea lies between the Scandinavian
peninsula and the rest of Europe.
It covers an area of about 149,000
square miles (386,000 square kilometers).
The countries that border the Baltic
are Sweden, Denmark, Russia,
Finland, Estonia, Latvia, Lithuania, Germany,
and Poland. The coasts of Sweden
and Finland are generally rocky, but the
coasts on the southern Baltic are flat.
The Baltic coastline of Germany has a
lot of bays and shallow inlets called
fjords. Canals link the Baltic to the
North Sea and the Arctic Ocean.
The countries around the Baltic use the
sea for trade. The chief ports are Copenhagen,
Denmark; Stockholm, Sweden;
Helsinki, Finland; Saint Petersburg,
Russia; and Gdansk, Poland.
The Vikings were the first to trade on
the Baltic, in the AD 700s. During the
Middle Ages, German merchants of a
group called the Hanseatic League controlled
trade on the sea. As the countries
around the sea prospered, the area
became more developed. By the middle
of the 1900s pollution from industries
and farms was a concern. In the 1990s
the Baltic countries agreed to clean up
the environment in and around the sea.
..More to explore
Atlantic Ocean
Bamako
Population
(2007
estimate), urban
area,
1,494,000
Bamako is the capital of theWest African
country of Mali. The city is also
A small town in Sweden is set in the rocky
coast of the Baltic Sea.
BRITANNICA STUDENT ENCYCLOPEDIA Bamako 17
Mali’s center for industry and trade.
Bamako spans both sides of the Niger
River. Large boats can travel on the river
for part of the year, when the water level
is high. The river is used to ship products
and for fishing.
At first Bamako was a settlement of only
a few hundred people. In 1880 the
French took it over. Bamako became the
capital of a colony called French Sudan
in 1908. When the area became the
country of Mali in 1960, Bamako
became its capital.
#More to explore
Mali
Bamboo
Bamboo is a name used for many types
of tall, treelike grasses. There are hundreds
of different species, or types, of
bamboo in the world. They grow in
mild to warm and humid areas. Most
are in Asia and on islands of the Indian
and Pacific oceans. A few types grow
naturally in the southern United States.
The stems of bamboo are called culms.
They vary greatly in size. The smallest
types are 4 to 6 inches (10 to 15 centimeters)
tall. In the largest species the
culms can be more than 130 feet (40
meters) tall. Culms are hollow and grow
in clusters from an underground stem
called a rhizome. Some grow as much as
1 foot (0.3 meter) per day.
Bamboo is used for a variety of purposes,
especially in Asia. In some countries,
the seeds are eaten as grain, or the
young shoots are cooked and eaten as
vegetables. Cattle eat the leaves. Some
types of bamboo are crushed to make
paper. The stems of other types are tied
together and used as rafts. They are also
used to form scaffolding, or a framework
on building construction sites. Bamboo
stems are also used to make buckets,
pipes, furniture, walking sticks, fishing
poles, garden stakes, chopsticks, and
other utensils.
Banana
Bananas are one of the most important
and popular foods in the world. They
are a flavorful fruit that is full of vitamins.
They can be found in stores
throughout the year.
Where Bananas Grow
Scientists believe that bananas first grew
in the tropics in Asia. Over the years
they spread to other humid tropical
places. Today people grow bananas in
Many types of bamboo look like trees, but
they are actually tall grasses.
18 Bamboo BRITANNICA STUDENT ENCYCLOPEDIA
Africa, Asia, Central America, and South
America.
Physical Features and Growth
Bananas grow on a banana plant.
Although it is often called a tree, the
banana plant is really a large herb. That
means it does not have a woody trunk
like a tree. Instead the banana plant has
a stalk that looks like a tree trunk. The
stalk grows from an underground stem.
The banana plant can be more than 20
feet (6 meters) tall. Large leaves grow
near the top. These leaves are 9 to 12
feet (3 to 3.5 meters) long. Each plant
produces 50 to 150 bananas. The
bananas grow in clusters of 10 to 20.
The bananas are usually chopped down
while green and unripe.
A banana plant only produces one
bunch of fruit. After the bananas have
been picked, the plant is cut down. In
six months new shoots grow from the
underground stem.
There are hundreds of types of banana.
One of the most popular is the common
banana. Its fruit is yellow and sweet
when ripe.
Uses
Bananas contain the mineral called
potassium. They are also a good source
of vitamins A and C. Bananas are usually
eaten fresh. However, they can be
used in pies, muffins, cakes, or breads.