1
-
Greenhouse
gases
____________________
heat
____________________
escaping
from
earth
into
space
.
2
-
Rice
and
wheat
are
grown
____________________
a
large
scale
____________________
Egypt
.
3
-
____________________
____________________
may
cause
the
Nile
Delta
to
flood
4
-
Pollution
and
desertification
are
____________________
problems
.
5
-
The
main
greenhouse
gases
are
____________________
____________________
and
____________________
.
