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30 Cards in this Set

  • Front
  • Back
all organisms living in a particular area, as well as all the nonliving physical things in the environment that the organism
an assemblage of all the organisms living together and potentially interacting in a particular area
a group of interacting individuals belonging to one species and living in the same geographic area
an individual living thing, such as bacterium, fungus, protest plant or animal
abiotic components
temperature, forms of energy, gases, water, nutrients, and other chemicals
biotic comonents
organisms making up the community of species in the area
the global ecosystem- sum of all the planet's ecosystems
environmental areas in which organisms live
tentative answer to some question
controlled experiment
component of the process of science whereby a scientist carries out two parallel test, an experimental test and a control test. The experimental test differs from the control by one factor, the variable
group whose members possess similar anatomical characteristics and have the ability to interbreed
moist air at the equator rises, creating a calm winds
solar energy
powers all surface terrestrial and shallow-water ecosystems
trade winds
descending dry air spreads back toward the equator
prevailing winds
result from combined effects of the rising and falling of air masses and Earth's rotation
area where a freshwater stream or river merges with the ocean
ecosystem that is intermediate between an aquatic and terrestrial
intertidal zone
where water meets land
pelagic zone
the open ocean
fishes,squids,whales, dolphins
algae and cyanobacteria
drift in pelagic zone
animals that drift in the pelagic zone; eat phytoplankton
benthic zone
sea floor
algae, fungi, bacteria, sponges, burrowing worms, sea anemones, clams, crabs, and fishes
no light; invertebrates-sea urchins, polychaete worms, and some fish
coral reefs
multicellular algae encrusted with limestone

support invertebrates and fishes with food
terrestrial biomes
tropical forest, savanna, desert, polar, chaparral, grassland, forest, tundra
mark-recapture method formula
number marked total of
in first catch x second
N= --------------------------
recaptured marked indiv.
intrinsic rate of increase
organism's maximum capacity to reproduce (r)
population-limiting factors
environmental factors that restrict population growth
logistic growth model
description of idealized population growth that is slowed by limiting factors as the population increases
logistic formula
(K-N) K=carring
G=rN ----- capacity