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15 Cards in this Set

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ecology?
study of interrelationships of living things and non-living environment
population?
all members of a particular species that live w/in an ecosystem & can potentially interbreed
how does population size change?
births, deaths, migration
community?
all populations that live in a habitat
ecosystem?
community of organisms and their environment both biotic and abiotic
biosphere?
earth and all places inhabited by organisms
postitive population growth
-growth outnumbers deaths
-immigration outnumbers emmigration
human population...
-growing rapidly
-advanced tchnology=increace in carrying capacity 4 humans
predation
predator vs prey
parasitism
parasite & host
symbiosis
close interaction b/t organisms of a different species.
--> either both benefit or 1 is harmed
commensalism
one species benefits the other is neither harmed or benefits
mutualism
both species benefit
4 trophic levels?
producers-trees
primary consumers-herbivores
secondary consumer-carnivore
tertiary-carnivores eating carnivores
nutrient cycling
producer-> 1000
primary-> 100
secondar->10
tertiary->1