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30 Cards in this Set
- Front
- Back
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population
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consists of all th individuals of a particular species in a particular place
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inbreeding
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breeding practice which can result in a loss of diversity within a population
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carring capicity
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the maximum # of individuals an eviornment can support over a long period of time. When reached there in an increase in competition for species survival need suchs as food, shelter, mates, exc
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density independent
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factors such as weather, floods, and firs that do not affect populations
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mutalism
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cooperatve relationship which benefits both species
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competitive exclusion
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principal that described the elimination of 1 species over another due to competition for the same limited resourse.
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theory of competitive exclusion assosiated with...
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G. F. Gause
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mimicry
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a harmless species resembles a poisonous or distasteful one
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omnivore
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feeds on both producers and consumers
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biomass
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dry weight of organic material in an ecosystem
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food chain
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single, linear pathway, beginning with producers, of the feeding relationship and energy transfer among organisms in an ecosystem
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trophic level
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feeding level of an ecosystem
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el nino
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disruption of normal air and water currents resulting in unusual weather patterns ad the cut off od nutrients to aquatic life
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detritvore
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decomposers that feed on decaying plants and animals
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exponental model
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population growth that increases rapidly while birth and death rates are constant
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succession
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gradual, sequential replacement and regrowth of a pop in an area
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ecology
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study of interactions or organisms with each other and their enviornment
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symbiosis
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2 or more species living together in a close long term assosiation
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biomes
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major terrestrial ecosystems located in different areas defined by climate and specific kinds of plants and animals
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CFC's
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destroy ozone
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nitrification
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stage in the nitrogen cycle where bacteria in the soil take up ammonia and form nitrates
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carbon cycle
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process which circulates carbon through the biosphere in photosynthesis and respiration
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abiotic facors
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nonliving phyical and chemical characteristics of the enviornment
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niche
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role a species plays in its enviornment
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biogeochemical cycle
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process by which materials necessary for organisms are circulated through the biosphere
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density- dependent factors
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factors such as food shortages and living space that can affect populations
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characteristics of mammals
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1.hair covered body
2. viviparous 3. milk from mammary glands for young |
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diaphram
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breathing muscle which seperates thoratic cavity from abdominal cavity and aids in breathing
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# of chambers in mammal heart
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4
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major characteristics for mammal classification
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1.morophology
2.reproduction 3.nutrition |
