Ecosystem

Name: ______________________   Date: ____________

Write the missing letters on the lines to finish each word.

1.
e c s y s t
A system formed by the interaction of a community of organisms with their physical environment
2.
o p h i c
3.
u c c e s s n
A following of one thing after another in time
4.
o r g a s
An individual living thing.
5.
c a b o n c l
The organic circulation of ___ from the atmosphere into organisms and back again
6.
p i e e r
One of the first colonists or settlers in a new territory
7.
n i r o e n t
The natural world around us
8.
n i r o g e n c l
9.
p e c e s
Coins collectively (plural)
10.
i e r a t i n
11.
o h r u s y c l e
12.
p o p a t i n
The number of inhabitants in a given place
13.
f o c h a i
A community of organisms where each member is eaten in turn by another member
14.
c o m u n t
A group of people having a religion, ethnic, profession
15.
f o o w b
A community of organisms where there are several interrelated ___ chains
16.
o e l a p
17.
o o s n h e s i s
How plants make food from sunlight
18.
h a b i a
The type of environment in which an organism or group normally lives or occurs
19.
p i r a t i o
The metabolic processes whereby certain organisms obtain energy from organic molecules
20.
b i o s h e
The regions of the surface and atmosphere of the Earth where living organisms exist
21.
p o u c r s
Someone who manufactures something (plural)
22.
n r g y
The power to do work or make things move
23.
n s u m e r
A person who uses goods or services (plural)