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Water Ecosystems
Test Description: Review Questions...
Instructions: Answer all questions to get your test result.
1) What is the largest ecosystem on the planet?
A
desert
B
grassland
C
tundra
D
ocean
2) Approximately how much of the planet is covered in water?
A
one half
B
two-thirds
C
one-fourth
D
three-fourths
3) What is the intertidal zone?
A
where the ocean meets fresh water.
B
where the ocean meets a tide.
C
where the ocean meets the land.
D
where the ocean meets a reef.
4) What is an estuary?
A
where a freshwater river runs into an extension of a lake
B
where a freshwater river runs into land
C
where a freshwater river runs into an extension of the ocean.
D
where a freshwater river runs into another rive
5) Protists are the primary producers in an ocean. This would be an example of what factor?
A
abiotic
B
biotic
C
food production
D
temperature
6) Where does most of the primary production occur in an ocean ecosystem?
A
first 50 feet
B
first 100 feet
C
first 300 feet
D
first 200 feet
7) What percentage of water of Earth is considered freshwater?
A
5%
B
3%
C
4%
D
2%
8) Where is most of the freshwater located on Earth?
A
glaciers and rivers
B
glaciers and aquifers
C
glaciers and streams
D
glaciers and lakes
9) What percentage of fish species live in freshwater ecosystems?
A
35%
B
40%
C
30%
D
45%
10) ___________________ are freshwater ecosystems with high biodiversity that are also declining in numbers.
A
Oceans
B
Rivers
C
Lakes
D
Wetlands
*select an answer for all questions
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