Over
____________________
third
of
____________________
Earth's
land
consists
of
deserts
and
they
are
among
____________________
hardest
and
most
inhospitable
environments
known
to
man
.
____________________
desert
is
classified
as
____________________
area
of
land
that
recieves
hardly
any
rainfall
.
there
are
different
kinds
of
deserts
;
for
example
____________________
Sahara
Desert
in
Africa
is
hot
and
dry
.
.
.
