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question		réponse
succession commencer à apprendre		changes in an ecosystem as other individuals die out and are replaced
primary succession commencer à apprendre		occurs when no soil exists
pioneer species commencer à apprendre		first species to inhabit
secondary succession commencer à apprendre		happens when primary succession has been interupted by human or natural occurances
Niche commencer à apprendre		organisms role in its einviroment
habitat commencer à apprendre		organisms einviroment
predatation commencer à apprendre		eating organisms, eating the prey
symbiosis commencer à apprendre		living together
mutualism commencer à apprendre		both species benefit
commensalism commencer à apprendre		one species benefits the other is neither harmed or helped
parasitism commencer à apprendre		one species benefits but the other is harmed
two types of population growth commencer à apprendre		exponential logistic
why would population wroth slow down? commencer à apprendre		runing out of resources
carrying capacity commencer à apprendre		number of individuals the einviroment can support
limiting factors commencer à apprendre		conditions that cause growth to slow down
density dependent commencer à apprendre		these factors only affect the population when the population is large
density independent commencer à apprendre		any factor that affects the whole population the same no mater the population size
autotroph commencer à apprendre		organisms that use energy from the sun or energy stored in chemical compuonds to manufactor their own nutrients
ecosystem commencer à apprendre		interactions among population n a community: the communities physical surroundings, or abiotic factors
heterotroph commencer à apprendre		organisms that cannot make their own food and must feed on other organisms for energy and nutrients
biomag commencer à apprendre		DDT
Deforestation commencer à apprendre		cutting down trees
biodiversity commencer à apprendre		variety of life in an area. usually measured as the number of species that live in an area
biology commencer à apprendre		study of life
levels of organiaztion in biology commencer à apprendre		individual, popuation, community, ecosystem

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