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7th Grade Vocab
Test Description: Earth
Instructions: Answer all questions to get your test result.
1) a partially enclosed body of water formed where a river flows into an ocean
A
aquatic ecosystems
B
estuary
C
Marine ecosystems
D
none of the above
2) includes any water environment and the community of organisms that live there.
A
none of the above
B
primary succession
C
wetland
D
Aquatic ecosystems
3) contain water that has very little salt in it. can be found in rivers, lakes, and wetlands
A
marine ecosystems
B
estuary
C
eutrophication
D
freshwater ecosystems
4) saltwater ecosystems. They cover more than 70% of Earth’s surface.
A
none of the above
B
climax species
C
estuary
D
marine ecosystems
5) When a community starts to grow in an area that has no soil
A
eutrophication
B
primary succession
C
pioneer species
D
climax species
6) a well-adapted species that has become dominant within an ecosystem.
A
primary succession
B
climax species
C
disturbance
D
pioneer species
7) The first organisms to live in an uninhabited area.
A
pioneer species
B
primary succession
C
climax species
D
secondary succession
8) a series of stages that occur when an ecosystem is damaged but the soil is left intact, allowing for the original community to regrow.
A
secondary succession
B
disturbance
C
eutrophication
D
climax species
9) the process in which organic matter and nutrients slowly build up in a lake or pond ecosystem
A
disturbance
B
eutrophication
C
none of the above
D
primary succession
10) an event that changes an ecosystem.
A
wetland
B
none of the above
C
succession
D
disturbance
11) the slow development or replacement of an ecological community by another ecological community over time.
A
succession
B
wetland
C
eutrophication
D
disturbance
12) an area of land that is saturated, or soaked, with water for at least part of the year.
A
wetland
B
none of the above
C
eutrophication
D
succession
*select an answer for all questions
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