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30 Cards in this Set

  • Front
  • Back
range of tolerance
a population reactions to variation in it's physical and chemical enviroment
Limiting factor
too much or too little of a abiotic factor can prevent population growth in an environment
make their own food from compounds and energy obtained from their environment
producers capture sunlight to produce carbohydrates
consumers (hetrotrophs)
get the energy and nutrients they need by feeding off of other organisms or their remains
herbivores (Primary Consumers)
they eat Producers
carnivores (secondary consumers)
eat on herbivores
high consumers
carnivores that eat carnvores
eat planets and animals (Herbivores and carnivores)
organisms that recycle nutrients in ecosystems
insects that feed off of wastes and dead bodies of animals
aerobic respiration
oxygen is used to convert organic nutrients back into carbon dioxide
anaerobic repiration
glucose is used to convert compounds into gas, acid, and hydrogen sulfide
earth's most important renewable resource
H=habitat destruction
I=Invasive Species
P=population growth
food chain
a series of organisms each of which is a source of food for the next
trophic level
an organism's assigned feeding level
the dry weight of all organic matter contained in its organisms
ecological efficiency
the transferred biomass from one trophic level to the next
pyramid energy flow
shows the energy loss for a simple food chain
Gross primary productivity
(GPP) the rate at which an ecosystem's producers convert solar energy into chemical energy as biomass
Net Primary Productivity
(NPP) is the rate at whice the producers use photosynthesis to store energy
is a thin covering over most land that is a complex mixture of eroded rock, mineral nutrients and other matter
process when bedrock is broken down into soil
soil horizons
soils that have develped over a long time and are layers in the earth
soil Profile
cross section view of horizons in soil
a mixture of decomposed bodies of dead plants and animals
the downward movement of water through soil
as it moves downward the water dessoloves varries minerals to lower layers
soil texture
the relative amounts of the different sizes and types mineral particals