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Environmental Science Exam Review 3
Test Description: Exam Review
Instructions: Answer all questions to get your test result.
1) Which of the following is not an environmental function of wetlands?
A
Absorbing and removing pollutants from water
B
Trapping carbon that would otherwise be released into the air
C
Controlling floods
D
Increasing runoff
2) Swamps are commonly found on
A
Forest clearings
B
Flat, poorly drained land
C
Bottoms of ponds or lakes
D
Rocky hillsides
3) The majority of marine organism are found in
A
fisheries
B
None of the above
C
Deep ocean waters
D
Shallow coastal waters
4) As they flow down a mountain to flatter ground, rivers generally become
A
All of the above
B
Slower
C
Wider
D
Warmer
5) Which of the following statements is NOT correct?
A
Rivers generally move faster, and their oxygen levels decrease, as they near the ocean.
B
Swamps are dominated by woody shrubs and water-loving trees.
C
Lakes may contain a region that receives little sunlight.
D
Wetlands help remove pollutants from water.
6) The types of organisms found in a pond or lake depend on
A
the temperature of the water.
B
the presence of nutrients.
C
All of the above
D
the amount of sunlight available.
7) In the ________ zone, life is diverse and abundant.
A
Eutrophic
B
Plankton
C
Littoral
D
Benthic
8) In the _______ zone, the water is cool and dark.
A
Eutrophic
B
Plankton
C
Benthic
D
Littoral
9) Which organism produces most of the food in an aquatic ecosystem?
A
Phytoplankton
B
Barnacles
C
Zooplankton
D
Fish
10) Which of the following is NOT characteristic of wetlands?
A
Wetlands are perceived historically as disease-infested wastelands
B
Wetlands are limited to inland freshwater environments
C
Wetlands have varied populations of plants and animals
D
Wetlands have plentiful nutrients and the capacity for photosynthesis
11) An estuary functions as a mineral trap due to
A
the filtering action of bottom-feeding fish species
B
its storing of pesticides from agricultural runoff
C
its great depth and particularly sticky sediment
D
the mixing action of river water and ocean water
12) What are two main types of freshwater wetlands?
A
Marshes and swamps
B
Littoral zones and benthic zones
C
Lakes and ponds
D
Rivers and streams
13) Which of the following is NOT characteristic of salt marshes and mangrove swamps?
A
Both are dominated by marsh grasses
B
Both are found along coastal areas
C
Both provide habitats for wildlife
D
Both are threatened by development
14) Which of the following is a threat to coral reefs?
A
Pesticides
B
All of the above
C
Oil spills
D
Sewage
15) Why doesn't photosynthesis occur in deep ocean water?
A
The salinity level of the water is too high
B
The water temperature is too cold
C
There is no sunlight
D
There are not enough nutrients
*select an answer for all questions
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