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ch 1 sec1


biosphere part of the earth that supports life
ecosystem consists of all the organisms living in an area
ecology study of interactions that occur among organisms and their environments
population made up of all organisms of the same species
community is all the populations of all species living in an ecosystem
habitat the place in which an organism lives
ch 1 sec 2
carrying capacity the largest number of individuals of one species that an ecosystem can support
limiting factors any living or nonliving feature that restricts the number of individuals in a population
population density the size of a population that occupies a specific area
competition 2 or more organisms that seek the same nest
biotic potential highest rate of reproduction under ideal conditions
exponential growth the larger a population becomes, the faster it grows
ch 1 sec 3
producers make their own food
consumers get food from eating other organisms
symbiosis close relationship between 2 species
mutualism relationship which both species benefit
commensalism relationship in which one organism benefits and the other is not affected
parasitism relationship in which one organism benefits but the other is harmed
niche an organisms role in it's environment
food chain a model that shows the feeding among the organisms in an ecosystem
predator are consumers that capture and eat other consumers
prey the organism that is captured by the predator
ch 2 sec 3
chemosynthesis the production of energy-rich nutrient molecules from chemicals
food web a model that shows all the possible feeding relationships among the organisms in a community
energy pyramid shows the amount of energy available at each feeding level in an ecosystem
Created by: spike