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jjadali
biology
| Question | Answer |
|---|---|
| ecology | is the scientific study of the relations that living organisms have with respect to each other and their natural environment. |
| biospere | The biosphere is the global sum of all ecosystems |
| species | A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring |
| population | A population is all the organisms that both belong to the same species and live in the same geographical area. |
| community | assemble of diffrent populations that live together |
| ecosystem | collection of all the organisms that live in a particular place |
| autotroph | organisms that take energy from the sunlight or chemicals and use it to produce its own food |
| heterotroph | organisms that produce energy from the food it consumes |
| food web | network of complex interactions formed by the feeding relationships among the various organisms in an ecosystem |
| trophic level | The trophic level of an organism is the position it occupies in a food chain |
| biomass | iomass, as a renewable energy source, is biological material from living, or recently living organisms |
| biogeochemical cycle | In ecology and Earth science, a biogeochemical cycle or substance turnover or cycling of substances is a pathway by which a chemical element or molecule moves through both biotic and abiotic compartments of Earth |
| limiting nutrient | A limiting factor or limiting resource is a factor that controls a process, such as organism growth or species population, size, or distribution. |
| weather | Weather is the state of the atmosphere, to the degree that it is hot or cold, wet or dry, calm or stormy, clear or cloudy. |
| climate | Climate 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 |
| green house effect | The greenhouse effect is a process by which thermal radiation from a planetary surface is absorbed by atmospheric greenhouse gases, and is re-radiated in all directions |
| biotic factor | Biotic components are the living things that shape an ecosystem. |
| abiotic factor | In biology and ecology, abiotic components are non-living chemical and physical factors in the environment which affect ecosystems. |
| logistic growth | A logistic function or logistic curve is a common sigmoid curve, given its name in 1844 or 1845 by Pierre François Verhulst who studied it in relation to population growth |
| carrying capacity | The carrying capacity of a biological species in an environment 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. |
| demography | Demography is the statistical study of human population |
| demographic transition | The demographic transition model (DT) 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. |
| green revolution | Green Revolution refers to a series of research, development, and technology transfer initiatives, occurring between the 1940s and the late 1970s, that increased agriculture production around the world, beginning most markedly in the late 1960s |
| renewable resource | A natural resource is a renewable resource if it is replaced by natural processes and if replenished with the passage of time. Renewable resources are part of our natural environment and form our eco-system. |
| pollutant | pollutant is a waste material that pollutes air, water or soil, and is the cause of pollution |
| biodiversity | Biodiversity is the degree of variation of life forms within a given ecosystem, biome, or an entire planet. |
| biological magnification | Biomagnification, also known as bioamplification or biological magnification , is the increase in concentration of a substance, such as the pesticide DDT, that occurs in a food chain as a consequence of: |
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