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