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