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100 Cards in this Set

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