<s>
In	O
geometry	O
,	O
a	O
fractal	B-Algorithm
canopy	I-Algorithm
,	O
a	O
type	O
of	O
fractal	B-Application
tree	O
,	O
is	O
one	O
of	O
the	O
easiest-to-create	O
types	O
of	O
fractals	B-Application
.	O
</s>
<s>
A	O
fractal	B-Algorithm
canopy	I-Algorithm
must	O
have	O
the	O
following	O
three	O
properties	O
:	O
</s>
<s>
The	O
angle	O
between	O
any	O
two	O
neighboring	O
line	O
segments	O
is	O
the	O
same	O
throughout	O
the	O
fractal	B-Application
.	O
</s>
<s>
The	O
pulmonary	O
system	O
used	O
by	O
humans	O
to	O
breathe	O
resembles	O
a	O
fractal	B-Algorithm
canopy	I-Algorithm
,	O
as	O
do	O
trees	O
,	O
blood	O
vessels	O
,	O
viscous	O
fingering	O
,	O
electrical	O
breakdown	O
,	O
and	O
crystals	O
with	O
appropriately	O
adjusted	O
growth	O
velocity	O
from	O
seed	O
.	O
</s>
