Ch. 15-16 Flashcards
the organisms in a food pyramid make their own food go by these two names
producers and autotrophs
trees algae and grass are all on what level of the pyramid
1st level
how many levels on a trophic pyramid
4
consumes go by this name
heterotrophs
organisms that consume dead organic matter and poop soild
detritivores
almost all energy for any food web begins with the
sun
this process returns water to the ecosystem
precipitation
this is the only process that returns oxygen from the air and removes carbon
photosynthesis
condensation is
gas to liquid
this graph has a sharp increase bc of no limiting factors
exponential
in this ocean zone no light can penetrate
aphotic
interactions between two organisms where they both benefit
mutualism
one benefits and one is unaffected
commensalism
this succssion would occur after a volcanic eruption
primary
in secondary sucesion recovery happens faster bc the
soil remains
this occurs when an area is split into small habitat pieces by development
fragmentation
organisms brought by human two areas they don’t belong
invasive species
each step in the food chain is called
trophic level
shows a single flow of energy
food chain
water vapor leaves a plant
transpirations
energy is lot as you move up the pyramid due to q
heat
how much energy does the consumer keep from eating
10%
maximum number of individuals an area can support
carrying capacity
non living factors on an environment
abiotic
where organisms live on the ocean floor
benthic zone
3 density dependent factors
- natural disasters
- seasonal cycles
- human impacts
3 main characteristics of population
- geographic distribution
- density
- growth rate
6 factors that affect aquatic organisms
- temp
- salinity
- light
- chemistry
- pressure
- depth
- geography
the carrying capacity is maintained by
limiting factors
how many individuals can be found per unit area
population density
on benefits and one is killed
predation
the amount of tissue in a given trophic level
biomass
