final exam 3
Terms
undefined, object
copy deck
- 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