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unit 2
| Question | Answer |
|---|---|
| is the scientific study of the relations that living organisms have with respect to each other and their natural environment. | 3-1 ecology |
| is the global sum of all ecosystems. | 3-1 biosphere |
| is one of the basic units of biological classification. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. | 3-1 species |
| is all the organisms that both belong to the same species and live in the same geographical area. | 3-1 population |
| a community is a group of interacting living organisms sharing a populated environment. | 3-1 community |
| is a biological environment consisting of all the organisms living in a particular area, as well as all the nonliving. | 3-1 ecosystem |
| is an organism that produces complex organic compounds (such as carbohydrates, fats, and proteins) from simple inorganic molecules using energy from light (by photosynthesis). | 3-2 autotroph |
| is an organism that cannot fix carbon and uses organic carbon for growth. | 3-2 heterotroph |
| it depicts feeding connections (who eats whom) in an ecological community. | 3-2 food web |
| is an organism is the position it occupies in a food chain. | 3-2 trophic level |
| is a renewable energy source, is biological material from living, or recently living organisms. | 3-2 biomass |
| is a pathway by which a chemical element or molecule moves through both biotic (biosphere) and abiotic (lithosphere, atmosphere, and hydrosphere) compartments of Earth. | 3-3 biogeochemical cycle |
| is a factor that controls a process, such as organism growth or species population, size, or distribution. | 3-3 limiting nutrient |
| is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy. | 4-1 weather |
| it encompasses the statistics of temperature, humidity, atmospheric pressure, wind, rainfall, atmospheric particle count and other meteorological elemental measurements in a given region over long periods. | 4-1 climate |
| is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions. | 4-1 green house effect |
| is any living component that affects another organism, including animals that consume the organism in question, and the living food that the organism consumes. | 4-2 biotic factor |
| are non-living chemical and physical factors in the environment which affect ecosystems. | 4-2 abiotic factor |
| 4-2 niche | |
| 5-1 logistic growth | |
| is the maximum population size of the species that the environment can sustain indefinitely, given the food, habitat, water and other necessities available in the environment. | 5-1 carrying capacity |
| is the statistical study of human population. | 5-3 demography |
| is the transition from high birth and death rates to low birth and death rates as a country develops from a pre-industrial to an industrialized economic system. | 5-3 demographic transition |
| 6-1 green revolution | |
| if it is replaced by natural processes and if replenished with the passage of time. | 6-2 renewable resource |
| is a waste material that pollutes air, water or soil, and is the cause of pollution. | 6-2 pollutant |
| is the degree of variation of life forms within a given ecosystem, biome, or an entire planet. | 6-3 biodiversity |
| is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain. | 6-3 biological magnification |
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donnyktkt2772
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