Exam 3: Biodiversity and Evolution
Exam 1: Environmental Problems, Their Causes, and Sustainability101 Questions
Exam 2: Science, Matter, Energy, and Systems162 Questions
Exam 3: Biodiversity and Evolution104 Questions
Exam 4: Community Ecology, Population Ecology, and the Human Population117 Questions
Exam 5: Sustaining Biodiversity: The Species Approach114 Questions
Exam 6: Sustaining Biodiversity: The Ecosystem Approach142 Questions
Exam 7: Food,Soil,and Pest Management151 Questions
Exam 8: Water Resources and Water Pollution147 Questions
Exam 9: Nonrenewable Energy Resources100 Questions
Exam 10: Energy Efficiency and Renewable Energy114 Questions
Exam 11: Environmental Hazards and Human Health116 Questions
Exam 12: Air Pollution, Climate Change, and Ozone Depletion148 Questions
Exam 13: Urbanization and Solid and Hazardous Waste189 Questions
Exam 14: Economics, Politics, Worldviews, and Sustainability141 Questions
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Transferring genes from a bacteria into rice to boost its vitamin content is an example of
(Multiple Choice)
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The golden tree frog that can only be found in one particular area is an example on a(n)____________________ species.
(Short Answer)
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Some of the offspring of a beetle develop spots.These spots make it harder for birds to see the beetles and thus,the spotted beetles tend to survive and produce more offspring than the beetles without spots.This heritable trait is called a(n)____________________.
(Short Answer)
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Species that are found in only one area and are especially vulnerable to extinction are referred to as which type of species?
(Multiple Choice)
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Toxic runoff from the hillsides will first affect the ____________________ zone of a lake.
(Short Answer)
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An estuary is an important area because it is a partially enclosed area where seawater mixes with rivers and nutrient from watersheds.
(True/False)
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Genetically modified bacteria used to clean up oil spills are a result of ____________________.
(Short Answer)
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____________________ in any cell can result in new genetic traits that can produce a better chance of survival.
(Short Answer)
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Adaptations make organisms more suited for the environments in which they live.We notice that,nonetheless,organisms do fall short of being perfectly suited to their environments.The adaptive process is limited by
(Multiple Choice)
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Marine life zones:
a.Coastal zone.
d.Abyssal zone.
b.Euphotic zone.
e.Estuarine zone.
c.Bathyal zone.
-In a deep,temperate zone lake,the littoral zone is similar to which marine life zone in terms of photosynthesis?
(Short Answer)
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The mechanism accepted by scientists for most evolutionary change is
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____ refers to the second phase of speciation,and it involves changes in gene pools.
(Multiple Choice)
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Leading biologists suggest that during the 20ᵗʰ century,extinction rates increased by 100-1000 times the natural background extinction rate.
(True/False)
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In undisturbed regions with moderate to high average annual precipitation you would most likely find
(Multiple Choice)
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Biomes are distinct regions separated from one another by drastic climate and vegetative differences.
(True/False)
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Economic growth and development increase the amount of sedimentation in rivers and streams and thus alter the diversity of the aquatic ecosystem.
(True/False)
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In a region with erratic precipitation and periodic drought and fire,you would most likely find
(Multiple Choice)
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-On the temperate-zone lake figure,choose the zone of open water where photosynthesis can occur.
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