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Zebra mussels are a mussel species from Japan that was introduced without negative consequences into the United States to improve water quality.

A) True
B) False

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  -Temperate forest biomes would fall in the area marked by the letter A) A B) B C) C D) D E) E -Temperate forest biomes would fall in the area marked by the letter


A) A
B) B
C) C
D) D
E) E

F) B) and E)
G) A) and D)

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Which of the following statements about trade in endangered species is False ?


A) The principal importers of endangered species are developed countries.
B) Overharvesting affects animals more than plants.
C) People who say they are animal lovers are the main contributors to the trade.
D) The principal exporters of endangered species are developing countries.
E) None of these statements are False .

F) A) and D)
G) A) and E)

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The temperature boundary in freshwater lakes is the


A) thermocline.
B) epilimnion.
C) benthos.
D) hypolimnion.

E) A) and B)
F) None of the above

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Tuna and great white sharks would be found within the


A) benthic zone.
B) littoral zone.
C) pelagic zone.
D) hadal zone.

E) B) and D)
F) B) and C)

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Which of the following is not a benefit of high biodiversity?


A) aesthetic and cultural value
B) potential medicinal value
C) potential sources of food
D) ecological value
E) production of carbon dioxide

F) B) and E)
G) C) and E)

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Habitat fragmentation usually leads to a(n)


A) decrease in biodiversity.
B) reduction in the number of introduced species.
C) increase in biodiversity due to the isolated populations.
D) increase in the number of introduced species.
E) more stable environment.

F) B) and D)
G) B) and C)

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One biome type that has not been as badly threatened as other biomes is


A) arctic tundra.
B) tropical rainforests.
C) grasslands.
D) temperate forests.
E) southern pine forests.

F) B) and D)
G) C) and D)

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The location of specific biomes can be predicted based on


A) the Coriolis Effect.
B) the Second Law of Thermodynamics.
C) precipitation and temperature.
D) seasonal variations in sunspots.
E) large landforms in the area.

F) B) and E)
G) A) and B)

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  -The area marked  A  has a A)  wide precipitation range and narrow temperature range. B)  narrow precipitation and temperature range. C)  wide precipitation and temperature range. D)  wide temperature range and narrow precipitation range. E)  varying temperature and narrow precipitation range. -The area marked "A" has a


A) wide precipitation range and narrow temperature range.
B) narrow precipitation and temperature range.
C) wide precipitation and temperature range.
D) wide temperature range and narrow precipitation range.
E) varying temperature and narrow precipitation range.

F) C) and D)
G) B) and E)

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The base of the marine food web is


A) phytoplankton.
B) sharks.
C) sea stars.
D) coral reef organisms.

E) C) and D)
F) B) and C)

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In general, funding for recovery programs is given to species that are


A) in the most danger.
B) the most important.
C) most well known.
D) most numerous.
E) keystone species.

F) A) and C)
G) A) and E)

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In terms of species diversity and complexity, a coral reef would be similar to which terrestrial biome?


A) Savannah
B) Arctic tundra
C) Tropical rainforest
D) Chaparral

E) B) and D)
F) B) and C)

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In contrast with the ______________, the soil of the ______________ is more nutrient-rich and this type of biome has fewer insects, parasites, and fungal diseases. Therefore, in many places, these areas are highly endangered.


A) temperate grasslands; tropical seasonal forest
B) tropical rainforest; tropical seasonal forest
C) tundra; boreal forests
D) tropical seasonal forest; tropical rainforest
E) boreal forests; tundra

F) B) and C)
G) All of the above

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Approximately how many species have been identified on Earth?


A) about 500,000
B) a little less than 1 million
C) about 1.5 million
D) a little more than 10 million
E) about 30 million

F) B) and C)
G) None of the above

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  -Desert biomes would fall in the area marked by the letter A) A B) B C) C D) D E) E -Desert biomes would fall in the area marked by the letter


A) A
B) B
C) C
D) D
E) E

F) A) and E)
G) A) and B)

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The primary difference between a bog and a fen is


A) fens are fed by groundwater, bogs are fed by rainfall.
B) fens have many trees, bogs have none.
C) fens are always on the coast, bogs are inland.
D) bogs are found only in brackish areas.
E) There are no differences between fens and bogs, they are synonymous.

F) A) and B)
G) A) and E)

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The main threat for the current high rate of extinctions is


A) uncontrolled sport hunting in the developed world.
B) commercial harvesting of wildlife in Africa.
C) drought conditions caused by the greenhouse effect.
D) habitat destruction worldwide.
E) there is not one, extinction rates this high are common

F) A) and E)
G) C) and D)

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Tropical moist forests have high species diversity because they have highly developed, diverse niche opportunities and habitats.

A) True
B) False

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