Chapter 14, 40, & 42
Biology & Chemistry 101 with Cherry-vogt at University of Wisconsin - Stevens Point
About this deck
By: Britt Dee
Created: 2012-05-07
Size: 26 flashcards
Views: 7
Created: 2012-05-07
Size: 26 flashcards
Views: 7
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endangered species act
protect species that were going to become extinct
extinction
the complete loss of a species
biodiversity
the entire variety of living organisms
mass extinction
species loss that is global, affects large numbers of species, and are dramatic in impact
background extinction rate
determine the current rate of extinction
habitat destruction
modification of habitats, lost habitat
species-area curve
the relationship between the size of an area and the number of species that it can support is called the
habitat fragmentation
subdividing one large habitat into several smaller sections
food chain
energy flows in one direction within an ecological system along a...
energy flows from:
producers (photosynthetic organisms)>>primary consumers that feed them>>secondary consumers (predators feeding on primary consumers)
trophic level
level of food chain, takes in energy
biomass
total weight
trophic pyramid
low trophic levels is larger than the high levels, this is necessary to support the chain as part of the principle of the...
introduced species
species that are brought in by humans to an area they have never been found before
overexploitation
can occur in plants as well as animals. over-fishing, over-hunting. over harvested plants and animals.
pollution
the release of poisons, excess nutrients, and other wastes into the environment-also threatens biodiversity
eutrophication
depletes oxygen in a process called, and results in fish being killed
biological community
consists of all the organisms of different species living together in aparticular area
food web
the complex linkage among organisms within a community
mutualism
an interaction between two species that benefits each of them
predator
a species that survives by eating other species
competition
two species of organisms both require the same resources in a habitat
competitive exclusion
a competitor reduces numbers of specific species
keystone species
some single species indirectly affect more than one other species to the extent that it it is reomoved the community collapses
reproductive isolation. darwins four rules. mutalism plus.
essay questions.
About this deck
By: Britt Dee
Created: 2012-05-07
Size: 26 flashcards
Views: 7
Created: 2012-05-07
Size: 26 flashcards
Views: 7
About StudyBlue
STUDYBLUE makes things that make you better at school.
Things like online flashcards with photos and audio.
Things like personalized quizzes and friendly reminders about when (and what) to study next.
Think of it as a digital backpack™: access to all of your study materials online and on your phone.
STUDYBLUE exists to make studying efficient and effective for every student, for free. Join us.
“I have used this website for three exams, and I see a huge difference in my test results.”
Naj
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