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Which of the following is an inaccurate statement about species diversity?


A) It includes species richness.
B) It includes species age distribution.
C) It is influenced by the relative abundance of species.
D) It is influenced by the distribution of the different species.
E) It is not impacted by species richness.

Correct Answer

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The greenhouse effect


A) will lead to decreased sea levels.
B) decreases the amount of carbon dioxide in the air.
C) increases the amount of carbon dioxide in the air.
D) is caused by gases such as carbon dioxide trapping heat in the Earth's atmosphere.
E) is due to gases forming a barrier around the Earth and insulating the Earth from the sun's rays.

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Which of the following is an example of species richness?


A) vultures feeding on the remains of a carcass
B) 60 elk, 6 bald eagles, and 90 white pine trees in a forest
C) prairie chickens at a lake competing for access to mates
D) diving beetles, blue gill, lilies, water mites, crayfish, bass
E) 100 kg of vegetation, 10 kg of grasshoppers, 1 kg of spiders

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Which of the following would be considered a mutualistic relationship?


A) Some species of crabs decorate their shells with sea anemones and other corals. These "decorations" help camouflage the crab, and the movement of the crab from one area to the next exposes the corals and anemones to different sources of food.
B) Some spiders do not build webs, but live in the web of another species. When a prey item is caught in the web, the non-web building spider will sneak in and steal the prey.
C) A praying mantis hunts and eats a fly.
D) The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtain all of their nutrients from the host.
E) Pseudoscorpions are small, harmless arachnids. To move from one place to another, they will sometimes latch onto the legs of flies and thus be carried long distances that they would not readily be able to traverse.

Correct Answer

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Which of the following is an example of a sedimentary cycle?


A) the phosphorus cycle
B) the nitrogen cycle
C) the carbon cycle
D) the atmospheric cycle
E) eutrophic cycle

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What is the first step in energy flow through an ecosystem?


A) Producers absorb solar energy.
B) Producers are eaten by the herbivores.
C) Decomposers break down the organic matter and make it available for the producers.
D) Top-level carnivores eat the herbivores or omnivores within the ecosystem.
E) Producers absorb nutrients from the soil.

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Which of the following correctly lists the progression of species present during primary or secondary succession?


A) fungi, nonvascular plants, gymnosperms, animals
B) nonvascular plants, angiosperm, gymnosperms, fungi
C) animals, fungi, nonvascular plants, angiosperms
D) angiosperms, nonvascular plants, animals, gymnosperms
E) gymnosperms, angiosperms, fungi, nonvascular plants

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Which ecosystem makes up approximately 70% of the Earth's surface?


A) aquatic; marine
B) aquatic; fresh water
C) aquatic; coral reefs
D) terrestrial; tundra
E) terrestrial; rainforest

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Which two terrestrial biomes are the most similar with regards to rainfall?


A) temperate deciduous forest and tropical seasonal forest
B) taiga and tropical rain forest
C) temperate rain forest and shrubland
D) grasslands and desert
E) temperate deciduous forests and tropical rainforests

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When too many nutrients are added to of a body of water, this is known as


A) a biogeochemical cycle.
B) reservoirs.
C) eutrophication.
D) global warming.
E) nitrogen fixing.

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Among American warblers, several different species often live in the same spruce trees and eat caterpillars. However, each species reproduces at a slightly different time of year and each species also forages at different areas within the tree canopy. These differences in foraging behaviors and reproduction is an example of


A) competitive exclusion.
B) character displacement.
C) resource partitioning.
D) mutualism.
E) competitive inclusion.

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Which of the following is an example of an animal's habitiat?


A) a small bird living in the dense shrubs at the base of a tree
B) two male lizards fighting over access to a female
C) a grasshopper feeding on leaves
D) an oystercatcher eating bivalves
E) lions and hyenas fighting over access to a zebra carcass

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A keystone species is


A) the largest species in a community.
B) the most numerous species in a community.
C) the least numerous species in a community.
D) a species on which many other species depend.
E) the species that occupies most of the niches within a particular environment.

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Which of the following is an example of the competitive exclusion principle?


A) two different species occupying the same ecological niche
B) two species competing for food and territory
C) competition of mates between two different species
D) two species sharing the same habitat
E) one species outcompeting another species in a particular niche

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Which of the following is an autotroph?


A) rose bush
B) lion
C) decomposer
D) omnivore
E) hyena

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Ecological succession is


A) a change in communities caused by human activities.
B) a stable community that forms after a change.
C) an orderly process of change in the community of organisms.
D) what happens to a cultivated field every year that crops are planted.
E) competition between opportunistic and equilibrium species.

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If there is 2,000 kg of plant material, how much of this biomass will be converted into top carnivore tissue? If there is 2,000 kg of plant material, how much of this biomass will be converted into top carnivore tissue?   A)  20,000 kg B)  2,000 kg C)  200 kg D)  20 kg E)  2 kg


A) 20,000 kg
B) 2,000 kg
C) 200 kg
D) 20 kg
E) 2 kg

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On average, 90% of energy is transferred from one trophic level to the next.

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In aquatic ecosystems, primary productivity is most dependent on


A) organic nutrients.
B) species richness and diversity.
C) the type of soil.
D) the rate of photosynthesis.
E) inorganic nutrients.

Correct Answer

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Which of the following would be considered an example of competition?


A) Some species of crabs decorate their shells with sea anemones and other corals. These "decorations" help camouflage the crab, and the movement of the crab from one area to the next exposes the corals and anemones to different sources of food.
B) Some spiders do not build webs, but live in the web of another species. When a prey item is caught in the web, the non-web building spider will sneak in and steal the prey.
C) A praying mantis hunts and eats a fly.
D) The longest tapeworm removed from a human was approximately 11 meters long. Tapeworms do not have a digestive system, but obtain all of their nutrients from the host.
E) Pseudoscorpions are small, harmless arachnids. To move from one place to another, they will sometimes latch onto the legs of flies and thus be carried long distances that they would not readily be able to traverse.

Correct Answer

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