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64 Cards in this Set
- Front
- Back
Define ecology |
Study of how organisms interact with one another and with their nonliving environment
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What is meant by sustainable yield? |
The highest rate at which a renewable resource can be used |
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Explain the difference between point and nonpoint pollution |
Point sources are single, identifiable sources.
Nonpoint sources are dispersed and difficult to identify |
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What is meant by positive feedback loop? |
Causes a system to change further in the same direction
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How is a biome defined? |
Large regions with distinct climates and certain species adapted to them.
Most defining factor is climate |
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What is being compared at each level in a pyramid of biomass, a pyramid of energy and a pyramid of numbers? |
Pyramid of biomass shows the mass transferred, Pyramid of energy shows the energy transferred, and pyramid of numbers shows how many organisms are on each level |
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Source of hydrologic cycle |
Powered by energy from the sun
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What are the adaptations of humans that have made them so successful? |
Opposable thumbs, walking upright and a complex brain
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How many mass extinctions of 25-70% of species have occurred? |
5
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Define species richness |
The abundance of individuals within each species
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What are the differences between generalist and specialist species? |
Generalists have broad niches and specialists have narrow niches |
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Identify and explain which of the following species would be considered a specialist species- Raccoon, Giant Panda, Cockroach |
Giant Panda is a specialist species because it only eats bamboo and has a low birth rate
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List the specific roles species can play within an ecosystem |
Native, invasive, indicator, keystone or foundation |
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A species in an ecosystem that plays a central role in the health of that ecosystem and whose removal may cause the collapse of the ecosystem, is called what? |
Keystone
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Define foundation species |
Creates or enhances their habitat to help other species
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Give an example of interspecific competition |
Humans take native species trees |
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A tapeworm is an example of what |
Parasite
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Multiple species cannot share the same ecological niche for an extended period of time due to what principle |
Competitive Exclusion Principle |
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Give an example of coevolution |
Bats and Moths
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A classic example of __________ is the relationship between a clownfish and a sea anenome |
Mutualism
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What is the biotic potential of a population? |
Capacity for population growth under ideal conditions
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What are the age structure categories? |
Pre-Reproductive, Reproductive and Post-Reproductive
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When a population has grown to a point at which its habitat can no longer be sustained without degradation, that population likely has reached its ____________ |
Carrying Capacity
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On a population vs time graph, a J-shaped curve represents what type of growth |
Exponential |
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Native prairie grasses show strong ______, as they are able to survive brush fires and moderate disturbances |
Resilience |
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Define tipping point |
Any additional stress will cause the system to change in an abrupt way
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Differentiate between climate and weather |
Weather is short-term while climate is based off of long periods of time
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What is the primary limiting factor for rain forests? |
Soil Nutrients |
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Describe the relative biodiversity of marine species in the coastal, euphotic, bathyal and abyssal zone |
Coastal-90% of all marine species, Euphotic-has many producers, Bathyal-Zooplankton and smaller fish, Abyssal-Decomposers/Filter Feeders |
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How are the 3 types of lakes different? |
Oligotrophic have a small supply of plant nutrients, Eutrophic has a large supply of nutrients and Mesotrophic is in between these
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What is background extinction? |
Continuous low level of extinction
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What is the difference between instrumental and intrinsic value? |
Instrumental is what the species provides and intrinsic is its right to exist
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What are the threats to species? |
HIPPCO
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What is the effect of habitat fragmentation? |
Will have less species and less adaptations to survive there |
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Describe the overall purpose of CITES and ESA |
CITES aims to reduce international trade of many threatened animals and the ESA identifies and protects endangered species |
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What are the two types of forest fires? |
Surface and Crown. Crown is more dangerous
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Define deforestation and the 3 major methods |
The temporary of permanent removal of large expanses of forests. Burning, Clear Cutting, Logging.
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Describe how rangelands and pastures are different from each other and savannas |
Rangelands are unfenced grasslands and pastures are managed grasslands. Savannas encompass both of these
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What are issues affecting national parks in the US? |
They are too popular, nonnative species, native species are killed illegally and there is polluted air
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Define wilderness |
Area where the earth and its ecosystems have not been seriously disturbed by humans
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What does HIPPCO stand for? |
Habitat destruction, Invasive species, Population and resource growth, Pollution, Climate change and Overexploitation
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What impact do trawlers have on ocean-floor ecosystems? |
They destroy coral reef habitats and the animals that live there and disturb the ocean floor.
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What is the difference between biological and commercial extinction? |
Commercial extinction is when an area is no longer making a profit and biological extinction is when the animals die.
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What countries still practice whaling today? |
Japan, Norway, Iceland and Russia
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Evolution |
Evolution is the change in the genetic characteristics from one generation to the next.
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Natural Selection |
Natural Selection is when some individuals have enhanced traits. |
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Genetic Drift |
Genetic Drift is the change of the frequency of a genetic trait.
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Geographic Isolation |
Geographic isolation is when genes are separated physically.
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Importance of Mutations |
Mutations are important because they bring new genetic traits which can help a individual to have better survival chances
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Hydrosphere |
Hydrosphere is the water.
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Biosphere |
Biosphere is where life exists. |
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Lithosphere |
Lithosphere is the outer part of the earth. |
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Geosphere |
Geosphere is the inside of the earth. |
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Atmosphere |
Atmosphere surrounds the earth
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Autotroph |
Autotrophs are producers.
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Herbivore |
Herbivores eat plants. |
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Carnivore |
Carnivores eat meat |
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Omnivore |
Omnivores eat plants and meat |
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Detritrove |
Detritivores feed on the wastes or dead bodies of organisms |
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Decomposer |
Decomposers break down dead bodies
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Habitats |
The place where a population normally lives
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Populations |
Group of individuals of the same species living in the same place at the same time
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Communities |
All of the populations that live in a single place |
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Ecosystems |
Community interacting with each other and with the abiotic factors
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