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