Page 148 - SST Class 07

Life in Tropical and

Subtropical Regions 20

q Life in the Amazon basin
q Life in the Ganga-Brahmaputra basin

Introduction LIFE IN THE AMAZON BASIN

The tropical and subtropical regions lie on both The Amazon bain lies in the tropical region and
sides of the Equator. The tropical region lies covers almost half of the continent of South
between 10°N in the Northern Hemisphere and America. This valley has been formed by the rich
10°S in the Southern Hemisphere. This region gets soil brought by the Amazon River and its
direct sunlight, and days and nights are almost tributaries.
equal throughout the year.
Amazon River
The subtropical region lies between 10°N and 30°N
The Amazon River is the world’s largest river in
in the Northern Hemisphere and 10°S and 30°S in terms of volume of water that it drains. It is 6,556
the Southern Hemisphere. This region lies close to
km long. A large part of the river is navigable.
the Equator and is influenced by sunlight to a great
Together with its tributaries, about 900 in number,
extent.
its basin area is about 70,00,000 sq km, about
We shall study life in the Amazon basin which lies in 50,00,000 sq km of which is covered with
the tropical region and in the Ganga-Brahmaputra rainforests. The basin of this river is the largest in
basin which lies in the subtropical region. the world. The Amazon basin expands over the

VENEZUELA
SURINAME Alpine tundra
COLOMBIA
GUYANA
Equatorial rainforest
Grassland
Japu
i R o Negro Amazo n
ra Belem Chaparral
A
ECUADOR Manaus Santarem
Iquitos Amazon
N
zon Tapajos
P E R U ma F rua ingu X
u
A Purus
D
Madeira B R A Z I L
PACIF
Recife
E
IC

S
Lima AT L A N T I C
O C E A N
Cuiaba
B O L I V I A Brasilia
OCEAN

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