Word Definition
limiting factor A limiting factor limits the growth or development of an organism, population, or process.
ecosystem a biological community of interacting organisms and their physical environment.
organism an individual animal, plant, or single-celled life form.
habitat the natural home or environment of an animal, plant, or other organism
biotic factor A biotic factor is any living component that affects another organism
abiotic factor Are the nonliving parts of an organism's habitat
photosynthesis the process by which green plants and some other organisms use sunlight to synthesize foods from carbon dioxide and water
species a group of organisms that are physically similar and can mate with each other and produce offspring that can also mate and reproduce
population all the inhabitants of a particular town, area, or country
community All the living different populations that live together make up a COMMUNITY
ecology the branch of biology that deals with the relations of organisms to one another and to their physical surroundings.
estimate an approximation of a number, based on reasonable assumptions
birth rate the number of live births per thousand of population per year.
death rate the number deaths per thousand of population per year.
immigration moving into a population
emigration leaving a population
carrying compacity the largest population the an area can support
population dentisty the number of indivisuals in an area if a specific size

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