Environmental Health Chapter 1 Study Guide with best solutions.

environmental conditions that control where an organism can live - correct answer limiting factors a relatively stable, self-perpetuating biotic community - correct answer climax community a natural area where living things interact with the chemical and physical environment - correct answer ecosystem animal species that moderate competition among prey species, thereby maintaining greater diversity within the community - correct answer Keystone predator the relative position occupied by an organism in a food chain - correct answer trophic level complex of communities characteristic of a regional climatic zone - correct answer biome gradual replacement of one biotic community by another over time - correct answer succession natural grouping of various plant and animal species within a given habitat - correct answer biotic community nonnative organisms introduced into an established biotic community - correct answer exotic species organisms that largely control the flow of energy through a community - correct answer ecological dominant individuals of the same species living together within a given area - correct answer population adaptations to life in a specific environment that reduce competition among species for food and living space - correct answer niche diversification