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34 Cards in this Set
- Front
- Back
- 3rd side (hint)
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Biosphere
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the portion of the earth in which all living things exist
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3 Parts of Biosphere
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Lithosphere,hydrosphere,atmosphere
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lucy has aids
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biotic factors
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living factors
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abiotic factors
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non living factors
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Examples of abiotic factors
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light, temperature,precipitation,soiland minerals
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soil contain bother BLANK and BLANK material
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organic and inorganic
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The organic material in soil is made of BLANK
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dead or decaying organisms
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Inorganic material is mostly BLANK
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rock particles broken down from weathering
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Soil development consists of 3 layers:
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1. Top soil
2. Sub Soil 3. Bottom layer of bits of rock broken off from bedrock below |
Terry sometimes bites
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Soil types classified according to... (4)
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1. Organic content
2. Mineral composition 3. pH 4.size of rock particles |
only men plant seeds
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population
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all individuals of a single species that live within a certain area
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community
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all populations within a certain area
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ecosystem
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a community and its enviorment
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Limiting Factors
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those that can limit population growth
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carrying capacity
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maximum population that can be supported by an enviorments resources
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auto-trophs
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-synthesize their own food through photosynthesis and chemosynthesis
-provide for heteroptrophs |
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heterotrophs
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-cannot synthesize their own food
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4 types of heterotrophs
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1.herbivore
2.omnivore 3.carnivore 4.decomposer |
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mutualism
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two organisms benefit from their association
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commensalism
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one organism is benefitted from the relationship and the other is not effected
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parasitism
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one organism is benefitted and the other is harmed
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habitat
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part of the ecosystem occupied by a certain organism
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niche
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role of a species in an ecosystem
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producers
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-produce their own food (autotrophs)
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consumers
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obtain nutrients from other organisms (heterotrophs)
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food chain
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a series of organisms through which energy is passed
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food web
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many food chains put together connect to make a web
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energy pyramid
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-shows the availible energy in an ecosystem
-avalible energy decreaes with each level |
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pyramid of biomass
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shows the total mass of organisms that can be suppported at each levek
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stable ecosystem (3)
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1. constant energy source
2. organisms that can use energy to synthesize food 3. materials must be recycled |
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ecological sucession
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the process by which an existing community is slowly replaces by another, more stable community
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dominant species
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species that effect the ecosystem the most
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climax community
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mature stable community developed over time
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primary succesion
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succession that occurs where no community already exists
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