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Chapter 5 - How Ecosystems Work

Name: _______________________________
Across
An organism that gets its energy by breaking down dead organisms.
The movement of phosphorous from the environment to organisms and then back to the environment.
Occurs when farmland is abandoned.
Illustrates the many feeding relationships that are possible in an ecosystem.
The cellular process of breaking down food to yield energy.
The organisms that can fix atmospheric nitrogen into a form usable by plants.
The process by which a plant uses sunlight to make sugar molecules.
An organism that makes its own food.
The first organisms to colonize any newly available area.
A final and stable community (the result of succession).
Is a type of succession that occurs on a surface where no ecosystem existed before.
Down
A consumer that eats only producers.
A consumer that eats producers and other consumers.
An organism that gets its energy by eating other organisms.
A gradual process of change and replacement of the types of species in a community.
A sequence in which energy is transferred from one organism to the next as each organism eats another organism.
Each step in the transfer of energy through a food chain or food web in an ecosystem.
A process by which carbon is cycled between the atmosphere, land, water and organisms.
A consumer that eats other consumers.