Ecology-Population Biology Study Cards
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each of the black spaces below before clicking
on it to display the answer.
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| Bacteria | Type of organism that carrie out nitrogen fixation
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| Limiting Factors | Biotic or Abiotic resources in the environment that limits population size
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| Producer/Autotroph | An organism that makes its own food
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| Global Warming | Increase in Earth's temperature from the buildup of CO2 and other gases in the atmosphere
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| Consumer/Heterotroph | An organism that cannot make its own food
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| Decomposer | Organisms that breakdown and feed on waste and dead organisms
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| Niche | The role an organism plays in its community
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| Herbivore | Organism that only eats plants
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| Omnivore | Organism that eats plants and meat
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| Carnivore | Organism that only eats meat
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| Food Web | Ecological model showing the relationships that form a network of interactions among organisms in a community
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| Trophic Lever | Diagram showing the flow of energy within an ecosystem
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| Mutualism | (+, +); Symbiotic relationship in which both species benefit.
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| Parasitism | (+, -); Symbiotic relationship in which one species benefits and the other is harmed.
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| Community | Different species living in the same area
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| Population | Same species living in the same area
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| Predation | One organism captures and feeds on another
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| Carrying Capacity | The number of organisms and environment can support over a period of time
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| Exponential Growth | As a population gets larger, it also grows faster; createsa J-shaped curve
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| Habitat Degradation | Damage to habitat by pollution
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| Immigration | When an organism moves INTO a population
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| Emigration | When an organism moves OUT of a population
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| Habitat Loss | The greatest threat to biodiversity
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| Endangered | Occurs when a species is near extinction
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| Demography | Study of human populations
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| Biodiversity | Number and variety of organisms found within an ecosystem or specific area
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| Invasive Species | An organism that is introduced into a new environment, where it is not native
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| Density-Dependent Factors | Limiting factors that depend on population size.
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| Density-Independent Factors | Affects all populations in similar ways, regardless of the population size.
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| Primary Succession | Growth and development of an area by plants and animals that has not been previously occupied by a community.
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| Secondary Succession | Growth and development of an area by plants and animals that has been disturbed.
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| Nitrogen Fixation | Bacteria convert nitrogen gas into ammonia, so it can be easily used bu the plant.
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| Denitrification | Occurs when bacteria return nitrogen back into gas state.
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| Transpiration | Process where plants release water through stomata.
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