biology ch 3 & 4
TRANSCRIPT
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Step 1 Step 2 Step 3 Step 4 Step 5
![Page 2: Biology ch 3 & 4](https://reader035.vdocument.in/reader035/viewer/2022062513/5576d805d8b42a87588b49cf/html5/thumbnails/2.jpg)
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Branch of biology that deals with interactions among organisms and
between organisms and their environment.
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What is ecology?
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The lowest level of environmental complexity
that includes living and non-living factors.
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What is ecosystem?
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All the members of a particular species living in
one area.
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What is population?
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The simplest grouping of more than one organism in
the biosphere.
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What is community?
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An organism that uses energy to produce its own
food supply from inorganic compounds.
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What is autotroph?
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A bacteria that uses chemicals to produce its
food.
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What are chemosynthetic bacteria?
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Compared to land, open oceans are low in the level
of these.
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What are nutrients?
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The total amount of living tissue within a given
trophic level.
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What is biomass?
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The term for each step in the transfer of energy and matter within a food web.
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What is a trophic level?
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A snake that eats a rabbit that eats grass is this level
on the food chain.
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What is a secondary consumer>
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The amount of energy that passes to the next trophic
level.
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What is 10%?
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The type of pyramid that shows the amount of living tissue at each trophic level
in an ecosystem.
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What is a biomass pyramid?
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What type of pyramid shows the number of
organisms at each trophic level.
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What is a pyramid of numbers?
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A natural phenomenon that maintains the Earth’s temperature range.
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What is the greenhouse effect?
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The process by which bacteria convert nitrogen gas in the air to ammonia.
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What is nitrogen fixation?
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The result of a lake having a large input of limiting
nutrients.
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What is an algal bloom?
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The rate at which organic matter is created by
producers in an ecosystem.
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What is primary productivity?
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The average year-after-year condition of temperature and
precipitation in a particular region.
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What is climate?
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A symbiotic relationship in which both species benefit.
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What is mutualism?
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The series of predictable changes that occurs in a community over time.
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What is ecological succession?
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Primary succession can begin after this.
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What is volcanic activity?
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In the photic zone this can occur.
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What is photosynthesis?
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This cannot occur in the aphotic zone.
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What is photosynthesis?
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Depth, flow, temperature, and chemistry.
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What are ways aquatic ecosystems are classified?
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An ecological inquiry method an ecologist uses
when studying populations of a certain species.
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What is modeling?