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100 Cards in this Set
- Front
- Back
analytical thinking
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how can i break this problem down into its constituent parts
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biocentric preservation
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emphasize the fundamental right of other organisms to exist and to pursue their own interests
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inductive reasoning
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study specific examples and try to discover patterna and derive general explanations from collected observations
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controlled studies
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comparisons are made between experimental and control populations that are identical in every factor except the one being studied
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creative thinking
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how might i approach this problem in new and inventive ways
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critical thinking
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what am i trying to accomplish here, and how will i know when ive succeeded
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deductive thinking
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series of logical thinking starting with a gerneral principle, a testable prediction is derived about a specific case
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logical thinking
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how can orderly, deductive reasoning help me think clearly
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environment
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1. circumstances and conditiions that surround an organism or a group of organisms
2. the social and cultural conditions that affect an individual or a community |
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environmental science
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systematic study of our environment and our place in it
biology, chemisty, geography, agriculture |
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global environmentalism
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extention of modern environmental concerns to global issues
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modern environmentalism
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a fusion of conservation of natural resources and preservation of nature with concern about pollution, environmental health, and social justice
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paradigm
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overarching models of the world that guide our interpretation of events
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parsimony
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a principle that says where two equally plausible explanations for a phenomenon are possible, we should choose the simpler one
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reflective thinking
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what does it all mean
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reproducibility
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making an observation or obtaining a particular result consistently
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scientific theory
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when a large number of tests supports an explanation and a majority of experts in a given field have reached a general consensus that it is the best description or explanation available
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significant numbers
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meaningful data that can be measured accurately and reproducibly
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statistics
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mathematical analysis of the collectioon, organization, and interpretation or numerical data
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sustainability
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ecological, social, and economic systems that can last over the long term
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sustainable development
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a real increase in wellbeing and standard of life for the average person that can be maintained over the long term without degrading the environment or compromising the ability of future generations to meet their own needs
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utilitarian conservation
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the philosophyh that resources should be used for the greatest good for the greatest number for the long run
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acids
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substances that release hydrogen atoms in water
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atom
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smallest particle that exhibits the characteristics or an element
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bases
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substances that readily bond with hydrogen ions in an aqueous solution
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biological community
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the population of plants, animals, and microorganisms living and interacting in a certain area at a given time
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biomass
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the accumulated biological material produced by living organisms
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carbon cycle
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circulation and reutilization of carbon atoms, especially viw the process of photosynthesis and respiration
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cellular respiration
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process in which a cell breaks down sugar or other organic compounds to release energy used for cellular work; may be anaerobic or aerobic, depending on the availablity of oxygen
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chemical compounds
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molecules made up of two or more kinds of atoms held together by chemical bonds
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conservation of matter
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in any chemical reaction, katter changes form; it is neither created nor destroyed
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consumer
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organisms that obtain energy and nutrients by feeding on other organisms or their remains
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decomposers
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fungus or bacterium that breaks complex organic material into smaller molecules
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ecology
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scientific study of relationships between organisms and their environment. it is concerned with the life histories, distribution, and behavior of infivifual species as well as the structure and funtion of natural systems at the level of populations, communities, and ecosystems
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ecosystem
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specific biological community and its physical environment interacting in an exchange of matter and energy
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energy
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capacity to do work, such as moving matter over a distance
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first law of thermodynamics
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energy is conserved; it is neither created nor destroyed under normal conditions
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food web
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a complex, interlocking series of individual food chains in an ecosystem
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ions
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electrically charged atoms that have gained or lost electrons
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kinetic energy
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energy contained in moving objects, such as a rock rolling down a hill, the wind blowing through the trees, or water flowing over a dam
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matter
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anything that takes up space and has mass
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metabolism
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all the energy and matter exchanges that occur within a living cell or organism; collectively, the life processes
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molecules
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combinations of two or more atoms
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nitrogen cycle
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circulation and reutilization of nitrogen in both inorganic and organic phases
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organic compounds
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complex molecules organized around skeletons of carbon atims arranged in rings or chains; includes biomolecules, molecules synthesized by living organisms
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pH
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value that indicates the acidity or alkalinity of a solution on a scale of 0 to 14, based on teh proportion of H+ ions present
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photosynthesis
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biochemical process by which green plants and some bacteria capture light energy and use it to produce chemical bonds. carbon dioxide and water are consumed while oxygen and simple sugars are produced
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potential energy
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stored energy that is latent but available for use. a rock poised at the top of a hill or water stored behind a dam are examples or potential energy
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primary producers
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photosynthesizing organisms
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productivity
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amount of biomass produced in a given area during a given period of time
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second law of thermodynamics
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with each successive energy transfer or transformation in a system, less energy is available to do work
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tropic level
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step in the movement of energy through an ecosystem; an organism's feeding status in an ecosystem
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adaptation
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physical changes that allow organisms to survive in a given environment
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Batesian mimicry
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evolution by one speicies to resemble another speicies that is protects from predetors by a venomous stinger, bad taste, or some other defensive adaptation
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biotic potential
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maximum reproductive rate of an organism, given unlimited resources and ideal environmental conditions
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carrying capacity
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maximum number of individuals of any species that can be supported by a particular ecosystem on a long-term basis
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coevolution
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process in which species exert selective pressure on each other and gradually evolve new features or behaviors as a result of those pressures
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commensalism
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symbolic relationship in which one member is benefited and the second is neither harmed nor benefited
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complexity
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number of species at each tropic level and the number of tropic levels in a community
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convergent evolution
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species evolve from different origins but under similar environmental conditions to havae similar traits
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divergent evolution
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separation of a species into new types
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diversity
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number of species present in a community as well as the relative abundance of each species
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ecological development
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gradual precess of environmental modification by organisms
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ecological niche
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functional role and position of a species in its ecosystem, including what resources it uses how and when it uses the resources, and how it interacts with other species
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ecotones
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boundaries between two types of ecological communities
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edge effects
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change in species composition, physical conditions, or other ecological factors at the boundary between two ecosystems
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environmental resistance
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all the limiting factors that tend to reduce population growth rates and set the maximum allowable population size or carrying capacity of an ecosystem
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evolution
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theory that explains how random changes in genetic materiall and competition for scarce resources cause species to change gradually
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exponential growth
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growth at a constant rate of increase per unit of time; can be expressed as a constant fraction or exponent
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habitat
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place or set of environmental conditions in which a particular organism lives
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J curve
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growth curve that depicts exponential growth
chape = J |
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K-adapted species
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organisms whose population growth is regulated by internal as well as external factors.
whales, elephants, top predators |
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keystone species
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species whose impacts on its community or ecosystem are much larger and more influential than would be expected from mere abundance
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logistic growth
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growth rates regulated by internal and external factors that establish an equilibrium with environmental resources
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Mullerian mimicry
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evolution of two species, both of which are unpalatable and have poisonous stingers or some other defense mechanism, to resemble each other
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mutualism
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a change, either spontaneous or by external factors, in the genetic material of a cell; mutations in the gametes can be inherited by future generations or organisms
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natural selection
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mechanism for evolutionary change in which environmental pressures cause certain genetic combinations in a population to become more abundant; genetic combinations best adapted for present environmental conditions tend to become predominant
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overshoots
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extent to which a population exceeds the carrying capacity of its environment
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pioneer species
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in primary successionon a terrestial site, the plants, lichens, and microbes that firsts colonize the site
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predator
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an organism that feeds directly on other organisms in order to survive; live-feeders, such as herbivores and carnivores
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primary productivity
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synthesis of organic materials by green plants using the energy captured in photosynthesis
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primary succession
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ecological succession that begins in an area where no biotic community previously existed
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r-adapted species
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organisms whose population growth is regulated mainly by external factors.
they tend to have rapid reproduction and high mortality of offspring |
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resource partitioning
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in a biological community, various populations sharing environmental resources through specialization, thereby reducing direct competition
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S-curve
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a curve that depicts logistic growth
shape = S |
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secondary succession
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succession on a site where an existing community has been disrupted
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selective pressure
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limited resources or adverse environmental conditions that tend to favor certain adaptations in a population. can lead to evolution
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symbiosis
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the intimate living together of members of two species; including mutuualism, commensalism and parasitism
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tolerance limits
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chemical or physical factors that limit the existance, growth, abundance, or distribution or an organism
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crude birth rate
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number of births in a year divided by the midyear population
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crude death (mortality) rate
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number of deaths per thousand persons in a given year
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demographic transition
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pattern of falling death rates and birth rates in response to improved living conditions; could be reversed in deteriorating conditions
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demography
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statistical study of human populations relating to growth rate, age structure, geographic distribution, and their effects on social, economic, and environmental conditions
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dependency ratio
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number of nonworking members compared with working members for a given population
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family planning
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controlling reproduction; planning the timing of birth and having only as many babies as are wanted and can be supported
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life expectancy
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average age that a newborn infant can expect to attain in a particular time and place
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neo-Mathusians
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believe that the world is characterized by scarcity and competition in which too many people fight for too few resources
thomas malthus predicted a dismisal cycle of misery, vice, and starvation as a result of human overpopulation |
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pronatalist pressures
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influences that encourage people to have children
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total fertility rate
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number of children born to an average woman in a population during her entire reproductive life
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zero population growth
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B+I = D+E
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