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APES keystone Questions and Answers
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APES keystone Questions and Answers Autotrophs an organism that produces its own food from inorganic compounds and a source of energy; ex: photoautotrophs and chemical autotrophs Community-Level Interactions when the interaction between two species leads to changes in the presence or abse...

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  • December 5, 2024
  • 1
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers

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  • apes keystone questions and answers
  • autotrophs an organism that produces its own food
  • community level interactions when the interaction

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  • APES
  • APES

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APES keystone Questions and Answers
Autotrophs - answer an organism that produces its own food from inorganic
compounds and a source of energy; ex: photoautotrophs and chemical autotrophs

Community-Level Interactions - answer when the interaction between two species
leads to changes in the presence or absence of other species or to a large change in
abundance of other species, then a community effect is said to have occurred

Decomposers - answer organisms that feed on dead organic matter

Ecological Community - answer 1) conceptual or functional meaning: a set of
interacting species that occur in the same place (sometimes extended to mean a set
that interacts in a way to sustain life) 2) operational meaning: set of species found in an
area, whether or not they are interacting

Food Chains - answer linkage of who feeds on whom

Food Webs - answer network of who feeds on whom or a diagram showing who
feeds on whom; synonymous with food chain

Keystone Species - answer species, such as the sea otter, that has a large effect on
its community or ecosystem so that its removal or addition to the community leads to
major changes in the abundances of many or all other species

Succession - answer process of establishment and development of an ecosystem

Trophic Level - answer in an ecological community, all the organisms that are the
same number of food-chain steps from the primary source of energy; ex: in a grassland,
the green grasses are on the first trophic level, grasshoppers are on the seconds, birds
that feed on grasshoppers are on the third, and so forth

Watershed - answer area of land that forms the drainage of a stream or river; if a
drop of rain falls anywhere within a watershed, it can flow out only through that same
stream or river

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