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Ecosystem
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Levels of organization in order
atoms and molecules - cells - tissues - organ - organ system - organism - population - community - ecosystem - biome - biosphere
mass of all living organisms in an area "living weight"
biomass
ability to do work
energy
what kind of energy do we use
movement
digestion
breathing
homeostasis
metabolism
all living things need ________ to function
energy
organisms that create their own energy
autotroph
making energy using sun
photosynthesis
formation of energy through chemicals
chem
osynthesis
auto = ?
troph = ?
self, feeder
organisms that get their energy from another organism
heterotroph
plant eater
herbivore
meat eater
carnivore
meat AND plant eaters
omnivore
dead organism eaters
detritovore
hetero = ?
other
each step in a food chain is called a ________
trophic level
a representation of the flow of energy
trophic level
ecological models used to show the flow of energy (2)
food webs, and food chains
Each level of a food web or food chain gets it energy how?
from the previous level
a simple model that shows how energy flowd through an ecosystem
food chain
more complex feeding relationships
food web
why are food webs more complex than food chains?
each organism feed on more than one species
Author
Anonymous
ID
42194
Card Set
Ecosystem
Description
Energy in Ecosystem
Updated
2010-10-14T18:53:40Z
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