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The study of the relationship between living organisms and their physical environment is ________.
ecology
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In a given geographic location, the combination of all living organisms plus the physical environment in which they live is termed a(n) ________.
ecosystem
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All ecosystems on earth make up the ________.
biosphere
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The type of location where a species lives is its ________.
habitat
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For an organism reaching its biotic potential, the growth rate is characterized by a(n) ________.
exponential
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The number of offspring produced by each reproducing member of a species, the ratio of males to females, and the time it takes offspring to become reproductively mature are characteristics of the ________ of a population.
biotic potential
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Factors in the environment that limit the ability of a species to meet its biotic potential are known as _______ factors.
environmental resistance
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The environment's ________ is the amount of a population that can be supported indefinitely by that environment.
carrying capacity
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The point at which the number of births equals the number of deaths is ________.
zero population growth
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The total biomass at each level of an ecosystem or the total amount of energy stored at each level of an ecosystem can be depicted with the use of a(n) ________.
ecological pyramid
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During photosynthesis, simple sugars are produced during the _______.
Calvin cycle
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The ________ feed on the producers, who use the sun's energy and nutrients from the soil to make their own food.
primary consumers
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A biogeochemical cycle involves the cycling of a chemical element between the biomass, exchange pool, and ________.
reservoir
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The process by which some bacteria convert nitrate to atmospheric nitrogen gas is ________.
denitrification
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Unlike the carbon and nitrogen cycles, the phosphorous cycle is classified as a ________ cycle because phosphorus never enters the atmosphere.
sedimentary
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