Ecology
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
e
c
o
l
y
The environment as it relates to living organisms
2.
e
c
o
s
y
t
A system formed by the interaction of a community of organisms with their physical environment
3.
a
d
i
a
t
i
Energy that travels in waves or particles
6.
p
u
l
a
t
i
o
The number of inhabitants in a given place
7.
p
o
d
c
r
An organism that makes its own food, usually using sunlight.
8.
c
n
s
u
e
An organism that obtains energy by eating other organisms.
9.
r
d
t
i
v
i
t
y
The ratio of the quantity and quality of units ___ to the labor per unit of time
10.
f
o
o
d
c
i
A community of organisms where each member is eaten in turn by another member
11.
c
a
m
o
u
l
a
An outward semblance that misrepresents the true nature of something
15.
c
m
m
s
a
l
s
m
The relation between two different kinds of organisms when one receives benefits from the other
16.
b
o
s
h
e
e
The regions of the surface and atmosphere of the Earth where living organisms exist
17.
h
b
i
t
t
The type of environment in which an organism or group normally lives or occurs
19.
b
o
n
y
c
l
e
The organic circulation of ___ from the atmosphere into organisms and back again
21.
n
o
u
r
n
a
Belonging to or active during the night
22.
b
m
e
A major biotic community characterized by the dominant forms of plant life and the prevailing
24.
c
c
e
s
s
o
n
A following of one thing after another in time