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Chapter 4 Word Puzzle

Across
A major regional complex of similar communities—a large-scale ecological unit recognized primarily by its dominant plant type and vegetation structure.
A species that has strong or wide-reaching impact far out of proportion to its abundance.
An interaction vital to agriculture and our food supply, involves free-living organisms that may encounter each other only once.
Alternatively, species may be able to coexist, adapting over evolutionary time as natural selection favors individuals that use slightly different resources or that use shared resources in different ways.
Areas with a Mediterranean climate, and consist of densely thicketed evergreen shrubs.
If a disturbance is severe enough to eliminate all or most of the species in a community, the affected site may then undergo a predictable series of changes.
Down
A visual map that shows the many paths along which energy and matter flow as organisms consume one another.
A disturbance dramatically alters an existing community, but does not destroy all life and organic matter.
An event that has drastic impacts on environmental conditions, resulting in changes to the community and ecosystem.
Species that arrive first and colonize the new substrate.
A relationship in which one organism, the parasite, depends on another, the host, for nourishment or some other benefit while doing the host harm.
A relationship in which two or more species benefit from interacting with one another.
Animals feed on the tissues of plants.