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Changes in Ecosystem

7th Grade Life Science

QuestionAnswer
The replacement of one type of community by another at a single location over a period of time. succession
An increase in the amount of nutrients, such as nitrates, in a marine or aquatic ecosystem. eutrophication
The first organisms to live in an uninhabited area and that starts a process of succession. pioneer species
The number and variety of organisms in a given area during a specific period of time. biodiversity
Type of succession that begins in an area with no soil. primary succession
Type of succession occurs when an ecosystem has a disturbance but the soil remains. secondary succession
Living organisms that are well-adapted and living in a stable environment. climax species