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the study of the interactions of living organisms with one another and with their physical environment (soil, water, climate...)
it consists of a community and all the physical aspects of its habitat, such as the soil, water, weather
succession that occurs in areas where there has been previous growth, such as in abandoned fields or forest clearings
the rate at which organic material is produced by photosynthetic organisms in an ecosystem
those organims that consume plants or other organisms to obtain the energy necessary to build their molecules
the specific level to which an organism in an ecosystem is assigned - used by ecologists to study how energy moves theough an ecosystem
organisms that obtain their energy from the organic wastes and dead bordies that are produced at all trophic levels
a diagram in which each trophic level is represented by a block, and the blocks are stacked on top of one another, with the lowest trophic level on the bottom
the path of water, carbon, nitrogen, and phosphorus from the nonliving environment to living organisms, and then back to the nonliving environment
a sun-driven process in which water moves into the atmposhere by evaporationgg from leaves
all organisms engage in this process, in which oxygen is used to oxidize organic molecules during cellular respiration - CO2 is made
it consists of all the indiciduals of a species that live together in one place at one time
the number of individuals in a population - this can affect the population's ability to survive
a hypothetical population that attempts to exhibit the hey characteristics of a real population
exponential growth curve
a curve in which the rate of ppulation growth stays the same, as a result the population size increases steadily J-curve
the limited resources - the rate at which they become depleted depends upon the population density of the population that uses them
a population model in which exponential growth is limited by a density-dependent factor S-curve
environmental conditions - those that don't depend on the number of organisms in a habitat
species found in rapidly changing environments that grow exponentially when environmental conditions allow them to reproduce
populations that grow slowly and that have small population sizes. They are limited by the carrying capacity and have long lifespans.
a situation in which individuals prefer to mate with others that live nearby or are of their own phenotype
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