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Unit 6 Balance of Ecosystems (Quaternary Consumers (feed on any dead…
Unit 6 Balance of Ecosystems
Quaternary Consumers
feed on any dead material
ex: fungi, vulture
decomposers
Tertiary Consumers
feed on secondary consumers (sometimes primary consumers)
ex: hawk, killer whale
carnivores
Primary Consumers
eat producers only
ex: rabbit, squirrel
herbivores
Producers
make their own food
ex: trees, grass
autotrophs
Secondary Consumers
eat producers and primary consumers
ex: frogs, mice
omnivores
Nutrient Cycles
recycling of nutrients in environments
water cycle
carbon cycle
Symbiosis
commensalism: benefits one side and other is unaffected
parasitism: benefits one side and harms the other
mutualism: benefits both sides
Interspecific comp. vs. Intraspecific comp.
both limit resources
intraspecific: competition over the same species
interspecific: competition over two or more different species
Biotic vs. Abiotic
abiotic: non-living chemical and physical parts of an environment
biotic: organisms that affect an ecosystem
Population Growth
the increase in number of individuals (per species)
prey regulate the size of predators
predators regulate size of prey