The
____________________
is
the
layer
of
gases
which
surrounds
the
Earth
.
The
atmosphere
consists
mostly
of
____________________
,
buit
it
also
contains
____________________
,
carbon
dioxide
and
other
gases
which
are
esential
for
life
on
Earth
.
The
atmosphere
____________________
the
Earth
from
harmful
ultraviolet
radiation
and
helps
maintain
the
Earth's
temperature
.
The
____________________
is
all
the
water
that
exists
on
Eartk
.
Water
covers
about
the
planet
.
We
can
find
____________________
in
all
three
states
of
matter
:
solid
,
liquid
and
gas
.
The
____________________
is
the
solid
part
of
the
Earth
.
It
is
made
up
of
three
layers
:
the
core
,
the
mantle
and
the
crust
.
The
____________________
is
the
hottest
part
of
the
Earth
and
it
is
made
of
____________________
.
The
outer
core
is
____________________
metal
.
The
inner
core
is
____________________
because
the
pressure
here
is
so
strong
that
the
iron
solidifies
.
The
____________________
surrounds
the
core
.
Heat
and
pressure
in
the
mantle
can
melt
rock
.
This
liquid
rock
is
called
____________________
.
The
____________________
is
the
outer
layer
of
the
geosphere
.
It
is
made
up
____________________
and
minerals
.
The
crust
forms
the
____________________
,
the
____________________
and
the
____________________
floors
.
The
crust
is
thicker
under
the
continents
than
under
the
oceans
.
The
____________________
is
composed
of
all
living
organisms
:
animals
,
plants
,
fungi
and
microorganisms
.
It
includes
all
the
ecosystems
on
land
an
in
the
ocean
and
rivers
.
