Terms : Hide Images
| 14674298999 | Population | a group of organisms of the same species populating a given area | 0 | |
| 14674303130 | Community | All the different populations that live together in an area | 1 | |
| 14674304647 | Ecosystem | A biological community of interacting organisms and their physical environment. | 2 | |
| 14674305478 | Biosphere | part of Earth in which life exists including land, water, and air or atmosphere | 3 | |
| 14674313098 | Biogeography | Study of past and present distribution of organisms | 4 | |
| 14674323218 | fixed action pattern | In animal behavior, a sequence of unlearned acts that is essentially unchangeable and, once initiated, usually carried to completion. | 5 | |
| 14674370717 | sign stimulus | External sensory stimulus that triggers a fixed action pattern. | 6 | |
| 14674380589 | Imprinting | the process by which certain animals form attachments during a critical period very early in life | 7 | |
| 14674391470 | Kinesis | A simple change in activity or turning rate in response to a stimuli. | 8 | |
| 14674395581 | taxis | Movement toward or away from a stimulus. | 9 | |
| 14674412032 | Pheromones | Chemical signals released by an animal that communicate information and affect the behavior of other animals of the same species. | 10 | |
| 14674430928 | Learning | The modification of behavior based on specific experiences. | 11 | |
| 14674447819 | Habituation | decreasing responsiveness with repeated stimulation. As infants gain familiarity with repeated exposure to a visual stimulus, their interest wanes and they look away sooner. | 12 | |
| 14674449028 | Cognitive Map | A neural representation of the abstract spatial relationships between objects in an animal's surroundings. | 13 | |
| 14674450786 | Associatve Learning | the acquired ability to associate one environment feature with another | 14 | |
| 14674451355 | Classic Conditioning | a type of learning in which one learns to link two or more stimuli and anticipate events | 15 | |
| 14674455721 | Operant Conditioning | a type of learning in which behavior is strengthened if followed by a reinforcer or diminished if followed by a punisher | 16 | |
| 14674455722 | Cognition | the process of knowing that may include awareness, reasoning, recollection and judgement | 17 | |
| 14674455723 | monogamy, polygamy, polygyny, polyandry | having only one spouse at a time Having more than one spouse at a time Having more than one wife at a time Having more than one husband at a time | 18 | |
| 14674455724 | Agonistic Behavior | A type of behavior involving a contest of some kind that determines which competitor gains access to some resource, such as food or mates. | 19 | |
| 14674455725 | Altruism | selflessness; generosity; devotion to the interests of others | 20 | |
| 14674455726 | Kin Selection | Natural selection that favors altruistic behaviors by enhancing reproductive success of relatives. | 21 | |
| 14674455727 | Reciprocal altruism | behavior that benefits another with the expectation that those benefits will be returned in the future | 22 | |
| 14674455728 | Demograhy | study of changes over time in vital stats of populations, especially birth rates and death rates | 23 | |
| 14674457283 | Semelparity | Reproduction in which an organism produces all of its offspring in a single event; also known as big-bang reproduction. | 24 | |
| 14674457284 | Iteroparirt | Having many reproductive cycles | 25 | |
| 14674457285 | Carrying Capacity | Largest number of individuals of a population that a environment can support | 26 | |
| 14674458529 | Exponential growth curve | j-shaped curve showing the rapid increase in an exponentially growing population | 27 | |
| 14674458530 | Logistic growth curve | a plot that shows how the initial exponential growth of a population is slowed and finally brought to a standstill by limiting factors | 28 | |
| 14674460381 | k-selection | Selection for life history traits that are sensitive to population density; also called density-dependent selection. | 29 | |
| 14674460382 | r-selection | Selection for life history traits that maximize reproductive success in uncrowded environments; also called density-independent selection. | 30 | |
| 14674460383 | ecological footprint | The aggregate land and water area required by a person, city, or nation to produce all of the resources it consumes and to absorb all of the wastes it generates. | 31 | |
| 14674460384 | Fundamental niche | The full potential range of the physical, chemical, and biological factors a species can use if there is no competition from other species. | 32 | |
| 14674460385 | Realized niche | the range of abiotic and biotic conditions under which a species actually lives | 33 | |
| 14674461271 | symbiosis | an ecological relationship in which two species live in close contact with each other | 34 | |
| 14674461272 | Parasitism | ecological relationship in which one organism benefits by harming another organism | 35 | |
| 14674463652 | Mutualism | ecological relationship between two species in which each species gets a benefit from the interaction | 36 | |
| 14674463653 | Commensalism | ecological relationship in which one species receives a benefit but the other species is not affected one way or another | 37 | |
| 14674463654 | Keystone species | A species that is not necessarily abundant in a community yet exerts strong control on community structure by the nature of its ecological role or niche. | 38 | |
| 14674463655 | Invasive species | A species, often introduced by humans, that takes hold outside its native range. | 39 | |
| 14674463656 | Ecological succession | transition in the species composition of a community following a disturbance; establishment of a community in an area virtually barren of life | 40 | |
| 14674463657 | Primary succession | a type of ecological succession that occurs in an area where there were originally no organisms present and where soil has not yet formed | 41 | |
| 14674463658 | Secondary succession | Succession following a disturbance that destroys a community without destroying the soil | 42 | |
| 14674463659 | Autotroph | an organism that is able to form nutritional organic substances from simple inorganic substances such as carbon dioxide. | 43 | |
| 14674463660 | Heterotroph | An organism that obtains organic food molecules by eating other organisms or substances derived from them. | 44 | |
| 14674463661 | Detritivore | A consumer that derives its energy and nutrients from nonliving organic material such as corpses, fallen plant material, and the wastes of living organisms; a decomposer. | 45 | |
| 14674464756 | Gross Primary Production | The total primary production of an ecosystem. | 46 | |
| 14674464757 | Net primary production | the gross primary production of an ecosystem minus the energy used by the producers for respiration. | 47 | |
| 14674465530 | Eutrophication | A process by which nutrients, particularly phosphorus and nitrogen, become highly concentrated in a body of water, leading to increased growth of organisms such as algae or cyanobacteria. | 48 | |
| 14674465531 | Biogeochemical cycle | any of the various chemical cycles that involve both biotic and abiotic components of ecosystems | 49 | |
| 14674465532 | Nitrogen Fixation | the conversion of nitrogen gas into ammonia | 50 | |
| 14674466706 | Biological magnification | a process in which retained substances become more concentrated at each higher trophic level in a food chain | 51 | |
| 14674466707 | Greenhouse affect | The trapping of heat by a planet's atmosphere | 52 | |
| 14674466708 | Global Warming | An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes) | 53 | |
| 14674469319 | Acid Precipitation | Conversion of sulfur oxides and nitrogen oxides to acids that return to Earth as rain, snow, or fog | 54 | |
| 14674469320 | Sustainable environment | a world system that takes into account the limits of the environment, produces enough material goods for everyone's needs, and leaves a heritage of a sound environment for the next generation | 55 | |
| 14786834250 | conservation biology | conserving diversity at all levels | 56 | |
| 14786845707 | threats to biodiversity | habitat loss, introduced species, overharvesting, global change | 57 | |
| 14786849666 | Acid rain | Rain containing acids that form in the atmosphere when industrial gas emissions (especially sulfur dioxide and nitrogen oxides) combine with water. Rain 5.6 ph or less | 58 | |
| 14786862877 | biological magnification | increasing concentration of a harmful substance in organisms at higher trophic levels in a food chain or food web | 59 | |
| 14786881537 | Ozone | A form of oxygen that has three oxygen atoms in each molecule instead of the usual two. | 60 | |
| 14786884481 | greenhouse effect | Natural situation in which heat is retained in Earth's atmosphere by carbon dioxide, methane, water vapor, and other gases | 61 | |
| 14786889386 | greenhous effect cause | Burning fuels | 62 | |
| 14786893577 | global warming | An increase in the average temperature of the earth's atmosphere (especially a sustained increase that causes climatic changes) | 63 | |
| 14786900093 | global carrying capacity | Maximum number of people that can be sustainably supported by a given environment. About 10-15 million | 64 | |
| 14786920714 | sustainable development | Development that meets the needs of the present without compromising the ability of future generations to meet their own needs. | 65 |
