Studied by 10 peopleAbiotic Factors
anything that’s not living in an ecosystem
biotic factors
anything that’s living in an ecosystem
population
all member of a species
community
all population in a given area (everything biotic)
ecosystem
the community and abiotic factors
6 characteristics of living things
made of cells
has genetic material
can grow and reproduce
response to stimuli (change in environment)
ability to evolve
has a metabolism (chemical reaction)
sexual reproduction
mating between two organisms (lots of genetic variations)
asexual reproduction
single parent (no genetic variations)
Levels of ecological organization
organism- individual member
population- multiple organisms of same species living together
community- multiple different populations living together
ecosystem- community + abiotic factors
biome- multiple ecosystems that share similar characteristics
biosphere- planet (all biotic + abiotic)
what gas does a plant add to the atmosphere
oxygen, photosynthesis
what gas does a plant take out of the atmosphere
Carbon
what is the major activity that humans perform that contributes to an increase of carbon in our atmosphere
burning of fossil fuels (combustion)
what ‘fixes’ nitrogen in the nitrogen cycle
bacteria
how do plants add water to the atmosphere
transpiration
negative impacts humans have on the cycles
water- pollution, deforestation, increased paving
carbon- combustion
nitrogen- increase of fertilizer, combustion
photosynthesis
water + carbon cycle
infiltration
water cycle
transpiration
water cycle
ammonification
nitrogen cycle
decomposition
carbon + nitrogen cycle
combustion
carbon + nitrogen cycle
precipitation
water cycle
respiration
water + carbon cycle
density dependent limiting factors
living things affects large population Ex. competition, parasitism, disease, predation
density-independent limiting factors
non living things affects large or small population
Ex. weather changes, pollution, natural disasters
what pattern of growth will population with limited resources show
logistic growth
what impacts the size of population
food source, disease, space, natural disasters
immigration
people who come into a population
emmigration
people who leave a population
water cycle, organism involved, human neg. impact
tree- transpiration
pollution
concrete- runoff ^
carbon cycle, organism involved, human neg. impact
plant- photosynthesis
combustion
^ co2 ^ temp.
nitrogen cycle, organism involved, human neg. impact
bacteria- ‘fix’ nitrogen
fertilizers
^ pollution
name the graph
logistic growth
(dotted line is called carrying capacity)
name this graph
exponential growth
(unlimited,humans)
name the steps of the water cycle
sun runs water cycle
precipitation
runoff
infiltration
evaporation
transpiration
condensation
Note
Flashcard