Ecosystems
Name: ______________________ Date: ____________
Write the missing letters on the lines to finish each word.
1.
s
y
e
m
A system formed by the interaction of a community of organisms with their physical environment
2.
E
n
g
The power to do work or make things move
3.
t
e
o
d
y
m
i
The branch of physics concerned with the conversion of different forms of energy
4.
o
w
The motion characteristic of fluids
5.
d
e
b
A community of organisms where there are several interrelated ___ chains
6.
f
o
d
h
A community of organisms where each member is eaten in turn by another member
9.
h
o
t
s
A place of political unrest and potential violence (plural)
10.
e
c
e
Coins collectively (plural)
11.
r
g
i
m
An individual living thing.
13.
s
b
i
t
The quality or attribute of being firm and steadfast
15.
o
n
c
c
e
The organic circulation of ___ from the atmosphere into organisms and back again
16.
m
i
v
r
A person who eats all kinds of foods
17.
e
v
o
r
Any animal that feeds chiefly on grass and other plants
18.
r
i
v
e
A terrestrial or aquatic flesh-eating mammal
20.
a
u
r
h
Plant capable of synthesizing its own food from simple organic substances
21.
t
o
s
n
t
e
s
How plants make food from sunlight
22.
n
v
r
n
t
The natural world around us
23.
p
o
u
i
Undesirable state of the natural environment being contaminated with harmful substances as