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Fragen in diesem Quiz (118)
1The total number of wolves inhabiting Isle Royale is defined as a _____.
- Aspecies
- Bcommunity
- Cpopulation
- Dgroup
- Epack
2The term _______ describes all interacting species, such as moose, ticks, and wolves, as well as their surrounding environment of trees, vegetation, and climate.
- Acommunity
- Bhabitat
- Cbiosphere
- Decosystem
- Ebiome
3A researcher who investigates how flooding affects the different populations on an island is most interested in which level of organization?
- Aecosystem
- Bcommunity
- Cbiome
- Dindividual
- Ebiosphere
4The ocean, sand, rocks, plants, seagulls, and invertebrates represent a(n)
- Aindividual.
- Bpopulation.
- Ccommunity.
- Decosystem.
- Ebiosphere
5Ocean fish demonstrate which distribution pattern?
- Arandom
- Buniform
- Cclumped
- Dirregular
- Easymmetric
6Which population distribution pattern is encountered most often by ecologists?
- Arandom
- Bclumped
- Cuniform
- Dirregular
- Easymmetric
7 Which population would most likely resemble a random distribution pattern?
- Ahumans in North America
- Bpenguins nesting in Antarctica
- Cwolves in Isle Royale
- Dtermites in a rainforest
- Eunderstory plants in a tropical rainforest
8Which behavior would most likely result in a uniform distribution pattern?
- Adefensive strategies
- Bmigration
- Cpredator avoidance
- Dterritorial and nesting behaviors in birds
- Esocial network of bees
9A flock of birds represents a _________ distribution pattern, while birds on a power line with six inches of space between each bird represents a _________ distribution pattern.
- Auniform; random
- Bclumped; random
- Crandom; uniform
- Dclumped; uniform
- Erandom; clumped
10A plant with wind-dispersed seeds is most likely to grow in a ____ distribution.
- Arandom
- Blinear
- Cspherical
- Dclumped
- Euniform
11 In a geographically isolated habitat, DNA analysis of a population can document
- ADNA inbreeding.
- Bloss of genetic diversity.
- Cidentification of individuals by DNA profiling.
- Dchanges in allele frequency of a gene.
- EAll of the above.
12 When a population reaches its carrying capacity, its growth rate will
- Aincrease exponentially.
- Bincrease arithmetically.
- Cslow and remain near zero.
- Ddecrease slowly.
- Edecrease rapidly.
13The rate of natural increase approximates zero when carrying capacity is reached and
- Abirth rate < death rate.
- Bbirth rate ≈ death rate.
- Cbirth rate > death rate.
- Dthe death rate falls to zero.
- Ethe birth rate falls to zero.
14Which of the following conditions would lead to the fastest population growth?
- Abirth rate = death rate; immigration = emigration
- Bbirth rate = death rate; immigration > emigration
- Cbirth rate > death rate; immigration > emigration
- Dbirth rate > death rate; emigration > immigration
- Ebirth rate > death rate; immigration = emigration
15A few years after a prey species population increases, the ____.
- Apredator population will increase
- Bprey population must decrease
- Cpredator population will decrease
- Dpredator population will exceed carrying capacity
- Eprey population will exceed carrying capacity
16Removal of a predator from an ecosystem may do all of the following, EXCEPT
- Aaffect prey populations.
- Ballow prey populations to remain above carrying capacity.
- Calter the vegetation of an ecosystem.
- Daffect the ecosystem balance.
- Ehave unintended negative results.
17Although many factors influence moose population density, predation is likely to be a density-__________ factor, and a harsh winter is likely to be a density-_________ factor.
- Adependent; dependent
- Bdependent; independent
- Cindependent; independent
- Dindependent; dependent
- Eabiotic; biotic
18Without an appropriate cave or other underground den where they can sleep through the winter, a bear will die. The abundance of caves, therefore, is a __________ factor and a(n) __________ factor influencing bear populations.
- Adensity-codependent; abiotic
- Bdensity-dependent; abiotic
- Cdensity-dependent; biotic
- Ddensity-independent; abiotic
- Edensity-independent; biotic
19Warmer temperatures have led to an increase of which population on Isle Royale?
- Apredator
- Bprey
- Cparasites
- Dconsumers
- Eproducer
20Which is NOT necessarily true of a keystone species?
- AIts loss would decrease the population of other species.
- BIts removal negatively impacts the community.
- CIts loss would harm the ecosystem.
- DIt is the most abundant species in the community.
- EIts biomass may not be great in the community.
21If honey bees become extinct, which food supply would also be negatively impacted?
- Aapples
- Boranges
- Cmelons
- Dpears
- EAll of the above.
22Which can be considered an adaptation by angiosperms to increase the chances of pollination?
- Acolor
- Bnectar
- Cscent
- Dflowers
- EAll of the above.
23What percentage of energy in a food chain comprising a blueberry bush, a mouse, and a hawk does the top consumer actually receive from the producer?
- A100%
- B1%
- C10%
- D50%
- E0%
24Which of the following lists members of a food chain in order from bottom to top?
- Agrass>>>>salmon>>>>grasshopper>>>>bear
- Bgrass>>>>grasshopper>>>>salmon>>>>bear
- Cgrasshopper>>>>salmon>>>>grass>>>>bear
- Dsalmon>>>>bear>>>>grass>>>>grasshopper
- Ebear>>>>salmon>>>>grass>>>>grasshopper
25What is a detailed and complex analysis of the feeding relationships in a community?
- Atrophic levels
- Bsymbiosis
- Cfood chain
- Dfood web
- Ekeystone analysis
26 An omnivore is
- Aa kind of animal that eats either other animals or plants.
- BNA
27Mice eat fruits and nuts, and snakes eat mice. Which of the following is most likely to happen if snakes are removed from the community?
- AThe number of fruits and nuts will increase, but mice populations will be unchanged.
- BThe number of fruits and nuts will increase, and mice populations will also increase.
- CThe number of fruits and nuts will be unchanged, and mice populations will also be unchanged.
- DThe number of fruits and nuts will be unchanged, but mice populations will decrease.
- EThe number of fruits and nuts will decrease, but mice populations will increase.
28 Symbioses is
- Aa close relationship between two organisms from different species.
- BNA
29All of the following statements about niches is true, EXCEPT
- Aa niche includes everything a species needs to survive and reproduce.
- Bno two species can share identical niches.
- Cspecies with overlapping niches experience competition.
- Dspecies in competition partition resources and both coexist.
- Especies with narrow niches never coexist with species having broad niches.
30What strategy does the African honey bee use when competing for resources?
- Ageneralist foraging behavior
- Bmigration
- Cdefensive behavior
- Dresource partitioning
- Esharing of resources
31What strategy does the imported honey bee, Apis mellifera, use when competing for resources?
- Ageneralist foraging behavior
- Bmigration
- Cdefensive behavior
- Dresource partitioning
- Esharing of resources
32What do scientists think is the cause of CCD?
- Aa virus
- Bpesticide
- Cstress and nutrition
- Da parasite
- Ea combination of many factors; possibly all of the above
33What may an individual do to help combat CCD?
- Aplant bee-friendly plants
- Blimit pesticide use
- Cavoid spraying pesticides during the day
- Dbecome a beekeeper
- EAll of the above.
34For maple syrup producers, global temperature increase correlates with
- Aa longer season.
- Ban earlier season.
- Can earlier and shorter season
- Da shorter season.
- Ea longer and more productive season.
35Why would a plant species go extinct but an animal survive when temperature change alters a habitat?
- APlants are less tolerant of rapid temperature change.
- BAnimals are more tolerant of heat changes.
- CAnimals are more mobile than plants.
- DAnimals are more adaptable.
- EAll of the above.
36What would be evidence for increased temperature affecting plant species in a mountainous region?
- Athe presence of nonnative plant species
- Bthriving plant species
- Cmigration of plant species to a higher elevation
- Dmigration of plant species to a lower elevation
- Eextinction of plant species
37What has changed over the last century that makes scientists believe the rise in average global temperature is not just a normal temporary fluctuation?
- AThe amount of water vapor in the atmosphere has increased.
- BThe amount of carbon dioxide in the atmosphere has increased.
- CThe amount of sunlight heating Earth has increased.
- DThe amount of heat going back out into space has increased.
- EThe amount of forested land has increased.
38Scientists have used all of the following to document global warming, EXCEPT
- Athermometers.
- Btree rings
- Chistorical records.
- Dseed-coat thickness.
- Eice cores.
39Which predator-prey pairing would likely have the most negative impact on a forest ecosystem if the predator is forced to migrate because of increased temperature?
- Abirds and blueberry bushes
- Bbirds and insects
- Crabbits and hawks
- Dwolves and rabbits
- Efox and mice
40Which processes regulate the natural carbon cycle on our planet?
- Adecomposition, transpiration, and respiration
- Btranspiration and decomposition
- Cphotosynthesis and transpiration
- Dphotosynthesis, respiration, and decomposition
- Ephotosynthesis, nitrification, and decomposition
41Which period brought a change to the natural carbon cycle of our planet?
- Aice age
- Bindustrial revolution
- Cthe medieval warm period
- Dthe Holocene
- Einterglacial warm period
42Although __________ is the most abundant greenhouse gas in the atmosphere, __________ is 30 times more potent as a greenhouse gas and therefore just as worrisome.
- Amethane; carbon dioxide
- Bcarbon dioxide; methane
- Cnitrous oxide; carbon dioxide
- Dcarbon dioxide; nitrous oxide
- Enitrous oxide; methane
43 The term _______ describes the interacting populations (e.g., moose and ticks) within an ecosystem.
- Acompetition
- Bcommunity
- Cniche
- Dpredator-prey relationships
- Ehabitat
44Which would NOT be examined in the study of a community?
- Aprey population
- Bpredator population
- Ctrees and vegetation
- Drainfall and drought
- EAll of the above.
45Put the following in order from simplest to most complex.
- Aindividual----ecosystem----community----population
- Bindividual----population----ecosystem----community
- Cindividual----population----community----ecosystem
- Dindividual----community----population----ecosystem
- Eindividual----community----ecosystem----population
46A community is composed of _____ .
- Amany individuals
- Bmany populations
- Cone or more ecosystems
- Dtwo or more species of plants
- Eall of the individuals in two or more species
47The geographic distribution of a population is influenced by all of the following, EXCEPT
- Aresources.
- Bbehavior
- Cnumber of young born.
- Dpredator avoidance.
- Eenvironment
48Place the population distribution pattern in order from most to least frequently encountered by ecologists.
- Arandom, asymmetric, and uniform
- Bclumped, random, and uniform
- Cclumped, uniform, and random
- Duniform, asymmetric, and clumped
- Easymmetric, clumped, and random
49A species of highly territorial individuals with limited territory and a large population is most likely to have a ____ distribution.
- Arandom
- Blinear
- Cspherical
- Dclumped
- Euniform
50Most species on the planet have a _____ distribution.
- Arandom
- Blinear
- Cspherical
- Dclumped
- Euniform
51Which of these would NOT be useful in assessing a population’s health?
- Abone remains
- Burine
- Cfecal remains
- Dradio transmitters
- Eblood spatter
52What information could be obtained from wolf scat?
- ADNA profiles
- Bvegetation preference
- Cpresence of arthritis
- Damount of urea
- Etime since last meal
53In a geographically isolated habitat, DNA analysis of a population can document
- ADNA inbreeding.
- Bloss of genetic diversity.
- Cidentification of individuals by DNA profiling.
- Dchanges in allele frequency of a gene.
- EAll of the above.
54A population limited by environmental factors would be an example of
- Alogistic growth.
- Bexponential growth.
- Clogarithmic growth.
- Darithmetic growth.
- Elinear growth.
55The best example of exponential population growth would be an increase of _____ per generation.
- A10 individuals
- B10%
- C10X (tenfold)
- Da variable rate, from 1.5X to 10X
- EAny of the above.
56The growth rate of a population is calculated from the ___ for that population.
- Acarrying capacity
- Bdifference between births and deaths
- Cbirth rate
- Dbirth rate and the carrying capacity
- Edeath rate
57Which of the following conditions would lead to the fastest population growth?
- Abirth rate = death rate; immigration = emigration
- Bbirth rate = death rate; immigration > emigration
- Cbirth rate > death rate; immigration > emigration
- Dbirth rate > death rate; emigration > immigration
- Ebirth rate > death rate; immigration = emigration
58Which of the following conditions indicates that a population is living at its carrying capacity?
- Abirth rate = death rate; immigration = emigration
- Bbirth rate = death rate; immigration > emigration
- Cbirth rate > death rate; immigration > emigration
- Dbirth rate > death rate; emigration > immigration
- Ebirth rate > death rate; immigration = emigration
59The difference between birth rate and death rate is known as
- Athe survival rate.
- Bthe logistic rate.
- Cthe growth rate.
- Dthe differential factor
- Ethe survivorship curve.
60When discussing human population trends, birth rate is often expressed as a number called the total fertility rate (TFR). The TFR is the number of children an average woman in the country has in her lifetime. The number of children a couple must have to replace themselves in the population is called the total replacement rate (TRR). TRR can be used a lot like death rate when calculating population trends. As a worldwide average, each couple must have 2.1 children to replace themselves (the extra 0.1 is the result of infant mortality).
TFR and TRR are given below for several countries. Which country has a decreasing population size?- ATFR = 2.1, TRR = 2.1
- BTFR = 5, TRR = 4
- CTFR = 3, TRR = 3
- DTFR = 7, TRR = 9
- ETFR = 2.2, TRR = 2.1
61A decrease in natural resources will ____.
- Aincrease the carrying capacity
- Bstimulate an increase in reproductive rate
- Ccause a reduction in habitat area
- Ddecrease the carrying capacity
- Eeliminate the population
62Which of the following most accurately describes the population cycles of moose and wolves on Isle Royale?
- AMoose and wolf populations stay at carrying capacity.
- BMoose populations stay at carrying capacity, while wolf populations rise and fall.
- CMoose populations rise and fall, while wolf populations stay at carrying capacity.
- DMoose and wolf populations rise and fall at the same time.
- EMoose and wolf populations rise and fall, but wolf populations peak a few years after the moose population peaks.
63A few years after a predator species population increases, the ____.
- Apredator population will increase
- Bprey population will decrease
- Cpredator population will decrease
- Dpredator population will exceed carrying capacity
- Eprey population will exceed carrying capacity
64In the absence of a predator species, herbivores like moose _____.
- Awill continue to have an exponential growth rate
- Bwill almost always die off because of the presence of density-dependent diseases
- Cmay exceed carrying capacity and have a fast die-off
- Dwill evolve to no longer require predators to balance their population size
- Emay eventually become omnivores
65Why do trees fluctuate with wolf-moose, predator-prey population cycles?
- AThey are a predator food source.
- BThey are a prey food source.
- CThey are dependent on predators.
- DThey are dependent on decomposers.
- EThey grow best when the ends of branches are eaten.
66An increase in the predator population that consumes herbivorous animals will cause
- Aa decrease in food plant populations.
- Bsome food plant populations to explode out of control.
- Ca general increase in food plant populations.
- Da loss of species diversity.
- Ean increase in species diversity.
67Which is NOT an abiotic factor that could affect a population?
- Abreeding places
- Bprecipitation
- Ctemperature
- Dvegetation
- Ehabitat
68Which is NOT a biotic factor that could affect a population?
- Apredator density
- Bprey density
- Cwater availability
- Dvegetation
- Ecommunity interactions
69Which is a density-dependent factor?
- Apredation
- Bflooding
- Cextremes of temperature
- Dfire
- Edrought
70Which is a density-independent factor?
- Acompetition
- Bdrought
- Cparasitism
- Ddisease
- Epredation
71Label each of the following with “D” for density-dependent or “I” for density-independent factors.
- A(D) the presence of a predator reduces prey populations by 50%
(D) competition for the same food resources
(I) pollution in a river wipes out 50% of fish population
(I) a winter storm wipes out 75% of a population
(I) a flood drowns 80% of mammals - B(I) the presence of a predator reduces prey populations by 50%
(D) competition for the same food resources
(I) pollution in a river wipes out 50% of fish population
(I) a winter storm wipes out 75% of a population
(D) a flood drowns 80% of mammals - C(D) the presence of a predator reduces prey populations by 50%
(I) competition for the same food resources
(D) pollution in a river wipes out 50% of fish population
(D) a winter storm wipes out 75% of a population
(I) a flood drowns 80% of mammals - D(I) the presence of a predator reduces prey populations by 50%
(I) competition for the same food resources
(D) pollution in a river wipes out 50% of fish population
(I) a winter storm wipes out 75% of a population
(D) a flood drowns 80% of mammals
- A(D) the presence of a predator reduces prey populations by 50%
72Food abundance is an example of a(n) _________ factor that is also a density-__________ factor, and a hurricane is an example of a(n) ________ factor that is density __________.
- Aabiotic; independent; abiotic; dependent
- Babiotic; dependent; biotic; independent
- Cbiotic; independent; abiotic; dependent
- Dbiotic; dependent; abiotic; independent
- Ebiotic; dependent; abiotic; dependent
73How has climate change affected the Isle Royale ecosystem?
- AThe moose population has decreased.
- BThe wolf population has decreased.
- CThe tick population has increased.
- DThe moose population has been weakened by ticks.
- EAll of the above.
74Warmer temperatures have led to an increase of which population on Isle Royale?
- Apredator
- Bprey
- Cparasites
- Dproducers
- Econsumers
75Climate change and warmer temperatures may
- Aalter vegetation growth patterns.
- Bincrease a population’s disease susceptibility.
- Caffect food sources of populations.
- Dincrease pest populations.
- EAll of the above.
76What makes an organism a keystone species?
- AIts loss would increase the population of other species.
- BIt is important for pollination.
- CIts loss would negatively impact the community and ecosystem.
- DIt is important for the survival of angiosperms.
- EIt is the most abundant species in a community.
77Which might NOT be considered a keystone species in its habitat?
- Aa prey species
- Ba predator species
- Cplants that feed insects
- Dinsects that pollinate plants
- EAll of the above.
78If honey bees become extinct, which food supply will NOT be negatively affected?
- Abroccoli
- Bavocado
- Casparagus
- Dalmonds
- Ewind or self-pollinated plants
79Which crop relies exclusively on honey bee pollination?
- Acantaloupe
- Bwheat
- Ccotton
- Dalmond
- Esoybean
80The economic value of crops pollinated by honey bees was estimated in 2000 to be
- A$14 billion.
- B$14 million.
- C$1 million.
- D$4 billion.
- E$4 million.
81All of the following are true of honey bees, EXCEPT
- Athey pollinate more than 100 different crops.
- Bthe crops they pollinate are worth $15 billion annually.
- Cthey are a keystone species.
- Dthey help pollinate angiosperms.
- Ethe workers are all male.
82Which is NOT a top-level consumer in a food chain?
- Acoyote
- Bhawk
- Chuman carnivore
- Dwolves
- Ehuman vegetarian
83Which is NOT true of consumers?
- AThey are higher up the food chain.
- BThey are heterotrophs.
- CThey are photosynthetic.
- DSome are herbivores.
- ESome are carnivores.
84Food chains are overly simplistic, as they do not consider
- Acarnivores.
- Bherbivores.
- Comnivores.
- Dproducers.
- Econsumers.
85Write M (mutualistic), C (commensalistic), or P (parasitic) for the following symbiotic relationships:
- Athe varroa mite on a bee (P)
bees in a hollow of a tree (C)
bees and flowering plants (M)
an orchid on a rainforest tree (C)
protists in termites (M)
tapeworm in humans (P)
clown fish and sea anemone (M)
humans and malaria causing Plasmodium (P)
barnacles on a whale (C) - Bthe varroa mite on a bee (C)
bees in a hollow of a tree (P)
bees and flowering plants (M)
an orchid on a rainforest tree (C)
protists in termites (P)
tapeworm in humans (C)
clown fish and sea anemone (P)
humans and malaria causing Plasmodium (C)
barnacles on a whale - Cthe varroa mite on a bee (M)
bees in a hollow of a tree (P)
bees and flowering plants (C)
an orchid on a rainforest tree (P)
protists in termites (C)
tapeworm in humans (P)
clown fish and sea anemone (C)
humans and malaria causing Plasmodium (P)
barnacles on a whale (C) - Dthe varroa mite on a bee (C)
bees in a hollow of a tree (C)
bees and flowering plants (C)
an orchid on a rainforest tree (P)
protists in termites (C)
tapeworm in humans (P)
clown fish and sea anemone (M)
humans and malaria causing Plasmodium (P)
barnacles on a whale (C) - Ethe varroa mite on a bee (P)
bees in a hollow of a tree (C)
bees and flowering plants (M)
an orchid on a rainforest tree (M)
protists in termites (C)
tapeworm in humans (P)
clown fish and sea anemone (C)
humans and malaria causing Plasmodium (C)
barnacles on a whale (P)
- Athe varroa mite on a bee (P)
86Competition for resources by two species occupying the same or similar niches is usually alleviated by
- Acommensalism.
- Bmutualism
- Cextinction of one species.
- Dresource partitioning.
- Esymbiosis.
87 __________ occurs when one species benefits while another species is harmed, while __________ is when one species benefits while another species is unharmed.
- AMutualism; commensalism
- BCommensalism; mutualism
- CCommensalism; parasitism
- DParasitism; commensalism
- EParasitism; mutualism
88Flowers of different colors or scents have different
- Areproductive organs.
- Bhabitats
- Cpollinators.
- Dpetals.
- Enectar
89A niche describes
- Athe habitat occupied by a species.
- Bthe space, environment, and resources necessary for a species fitness.
- Cthe community’s place in a ecosystem.
- Dthe environment that an organism lives in.
- Ethe place where a population lives.
90Where did the killer bee originate?
- AAfrica
- BBrazil
- CCentral America
- DAustralia
- ENew Guinea
91Which has been observed in killer bees?
- Achasing away other pollinators from food sources
- Bswarming
- Cstinging animals near their hives
- Daggressive behavior
- EAll of the above.
92Introduction of non-native species of bees to the United States may cause
- Acompetition for limited resources.
- Ba decline in native species.
- Cmigration of native bees.
- Dpartitioning of food resources.
- EAll of the above.
93Why is it important to investigate and prevent the spread of colony collapse disorder (CCD)?
- Ato protect our food chain.
- Bto support the economy
- Cto enhance diversity of bees
- Dto prevent killer bee infestation
- Eto protect bees because they are a keystone species
94Maple production in New England is being affected significantly by
- Atemperature increase.
- Bdrought
- Cpestilence.
- Drain
- Ewoody adelgid.
95Which group of plants shows a correlation between global temperature increase earlier flowerings?
- Awinter-reseeding plants
- Bsummer-blooming plants
- Cfall-flowering plants
- Dspring-blooming plants
- Eannuals
96Which of the following BEST describes an ecosystem?
- Athe animal life in an area
- Bthe plant life in an area
- Cthe plant and animal life in an area
- Dthe plant, animal, and bacterial life in an area
- Ethe plant, animal, and bacterial life plus the physical and chemical environment in an area
97Which of the following statements is TRUE?
- AThe average first-flowering date for spring-blooming plants has been unaffected by warming temperatures.
- BThe average first-flowering date for summer-blooming plants is occurring later than it did 50 years ago.
- CPlants that are blossoming earlier are also keeping their blossoms longer.
- DAn average monthly temperature increase of as little as 1ºC can cause plants to bloom several days earlier than average.
- EEarly blooming is likely only occurring in a few tree species.
98As temperatures increase in the northern hemisphere, plant and animal distributions are most likely to migrate
- Anorth
- Bsouth
- Ceast
- Dwest
- Eto lower elevations.
99Match up terrestrial biome to plant inhabitant.
- ARainforest____ Pine tree = D
Temperate deciduous forest____ Cactus = E
Grassland____ Maple tree = B
Coniferous forest____ Sunflower = C
Desert____ Bryophytes = F
Tundra____ Palm tree = A - BNA
- ARainforest____ Pine tree = D
100The greenhouse gases include
- Acarbon monoxide, nitrogen, and ozone.
- Bcarbon dioxide, ozone, and methane.
- Ccarbon monoxide, methane, and nitrogen.
- Dcarbon dioxide, methane, and nitrous oxide.
- Emethane, sulphur, and carbon dioxide.
101 Increases in greenhouse gases
- Aincrease the heat exiting the atmosphere.
- Breleases heat into the atmosphere.
- Cprevent the Sun’s energy from reaching Earth.
- Dreflect heat from the Sun into the upper atmosphere.
- Etrap heat in Earth’s atmosphere.
102What evidence supports an increase in Earth’s surface temperature?
- Ahistorical records
- Btree rings
- Cice cores
- Dcorals
- EAll of the above.
103Carbon dioxide has rapidly increased in
- Athe last 50 years.
- Bthe last 1000 years.
- Cthe last 20 years.
- Dthe last 100 years.
- Ethe last 500 years.
104In the face of rising temperatures, which organism below has the greatest disadvantage?
- Asugar maple tree
- Bhawk
- Cforest tent caterpillar
- DAcadian flycatcher
- Ered fox
105As a consequence of global warming,
- Aonly plants will be negatively affected.
- Bonly animals will be negatively affected.
- Call plants and animals will be negatively affected.
- Dsome plants and animals will be negatively affected, while others won’t be affected at all.
- Esome plants and animals will be negatively affected, while others will be positively affected.
106Scientists project that the temperature in the Arctic may rise by______ in the next century.
- A1° – 2°C
- B2° – 4°C
- C4° – 7°C
- D8° – 10°C
- E10° – 12°C
107On average, which continent has warmed twice as much when compared with others?
- ANorth America
- BArctic
- CEurope
- DAfrica
- ESouth America
108To what extent has the Arctic ice cap changed in the last 30 years or so years?
- AIt has decreased by 5%.
- BIt has increased by 10%.
- CIt has decreased by 20%.
- DIt has decreased by 10%.
- EIt has not decreased.
109Why are increasing temperatures in the Arctic a threat to polar bears?
- ASummer sea ice has melted and is unavailable for hunting seals.
- BPolar bears may invade urban areas on land as ice has melted.
- CPolar bears may drown looking for sea ice.
- DPolar bears are not as reproductively fit due to nutritional loss.
- EAll of the above.
110What is the evidence for global warming?
- Adecreasing arctic sea ice
- Bmelting glaciers and ice caps
- Crising sea levels
- Dhistorical records of Earth’s surface temperature
- EAll of the above.
111All of the following statements about polar ice are true, EXCEPT
- Asea ice is breaking up in the spring nearly 3 weeks earlier than it did in the 1970s.
- Bin the last 30 years, the Arctic has lost more than 1 million acres of sea ice.
- Cpolar regions are warming faster than other areas of the world.
- Dmelting sea ice will raise ocean levels, but melting glaciers will not.
- EArctic temperatures are predicted to rise by 4° to 7°C over the next 100 years.
112Which human activities contribute to elevated carbon dioxide levels in the atmosphere?
- Adriving gasoline-powered cars
- Bburning of coal
- Cburning of oil
- Dburning of forests
- EAll of the above.
113Scientists examine these to assess levels of carbon dioxide through history.
- Asedimentary cores
- Bice cores
- Cpeat cores
- Dtree rings
- EAll of the above.
114Why are ice cores useful in tracking carbon dioxide levels?
- ARatios of isotopes can be compared.
- BThey contain sediment from volcanoes.
- CAir bubbles in the ice contain gases that can be measured.
- DWater can be analyzed for carbon dioxide.
- EThey are easy to obtain.
115Historical records from ice cores reveal fluctuating levels of carbon dioxide in the approximate range of _________. Today, atmospheric carbon dioxide levels approach _________.
- A10–100 ppmv; 200 ppmv
- B100–200 ppmv; 300 ppmv
- C200–300 ppmv; 400 ppmv
- D200–300 ppmv; 200 ppmv
- E300–600 ppmv; 600 ppmv
116The Vostok Ice Core provides data from _______complete glacial cycle(s).
- Aone
- Btwo
- Cthree
- Dfour
- Efive
117The Vostok Ice Core provides data from approximately
- A50,000 years ago.
- B100,000 years ago.
- C200,000 years ago.
- D20,000 years ago.
- E400,000 years ago.
118All of the following statements about atmospheric carbon dioxide levels are true, EXCEPT
- Alevels are currently measured directly from the air.
- Bhistoric levels are measured by examining air bubbles trapped in ice cores.
- Chistoric levels of CO2 reached present-day levels only twice before.
- DCO2 levels cycle in patterns that correlate with major ice ages.
- Esince the late 1800s, atmospheric CO2 has increased 35%.
Informationen
- Beschreibung
- Quiz am Ohne Titel, erstellt von c sdasadsda am 15/06/2018.
- Autor
- c sdasadsda
- Sprache
- English
- Aufrufe
- 2
- Schlagwörter
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