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33 Cards in this Set

  • Front
  • Back
energy flow
food chain
food pyramid
food web
food chain
Grass->rabbit->fox->saprophyte (decomposoer)
Energy pyramid
smallest amt of energy available is at the top
Pyramid of mass
since energy lost from one level to next each level can support a successively smaller biomass
pyramid of number
greater # of organism at the base
smallest # at the top
herbivores
eat plant
heterotrophs
carnivores
eat meat
heterotrophs
detrivores
like scavengers and decomposers
live on dead organic matter
omnivore
eat both plants and animals
Food web
expension of food chain
greater the number of pathway in a community the more stable it is
4 kinds of bacteria in nitrogen cycle
decay
nitrifying NH3->NO2->NO3
denitrifying NH3 -> N2
nitrogen fixing N2->NO3
Nitrogen cycle
N2(free nitrogen in atmosphere) ->NO3 nitrite -> plant protein synthesis ->animal protein synthesis->NH3 (ammonia) from dead remain ->NO2 nitrites and to N2 ->NO3
nitrogen fixing bacteria
on the roots of legume

convert N2 (free nitrogen in the air) to Nitrates NO3-
Denitrifying bacteria
ammonia NH4 to N2
Nitrifying bacteria
chemosynthesis

from NH3->NO2- nitrites -> Nitrates NO3-
carbon cycle
CO2 in the air (thru photosysnsis)-> organic compund in the plants(glucose)->thru eat animal -> decay or respiration animal produce CO2
levels of biological organization
organism
population
community
ecosystem
biosphere
level of organism
atom
molecule
cells
tissue
organ
organ system
population
group of organisms of same species living together in a given location
community
population of different plants and animals interacting in given location
niche
defines functional role of an organism in its ecosystem.
describe what organism eats and where and how it obtains its food what climate factor are optimal.
ecosystem
interaction between living biotic community and nonliving environment (abotic)
two species can't occury same niche because they compete for same resourse as a result??
1. one survie other doesnt
2. one surve in one environment and other on other enviornment
3. evolve direget direction
Mutualism
benefit both host and organmism

ex intestinal bac and human
thickbirds and rhinocors
commensalism
host not affected
organism 2 benefit
parasitism
host - negative
organism 2 benefit

ex virus and host cell
saporophyte
fungi or protist
decompose dead organism and absorb nutrient
Tundra
treeless, frozen pain found btw taiga lands and nothern ice sheets

short summer and very short growing session
Taiga
long cold winter, receive less rainfall than temp forest

northern part of canada and russia
tropical rain forst
jungle
deciduous forst
cold winter, warm summer and moderate rain fall
tree shed leaves during winter
coniferous forest
cold and dry

N part of US
Grassland biome
low rainfall but more than desert

provide no shelter for herbivorus mammals