WHAT#IS#AN#ECOSYSTEM?#
•  All#the#living#and#nonliving#parts#of#an#environment##
1.  AbioDc#Factors—non#living#factors#(air,#temperature,#
soil,#water,#etc.)#
2.  BioDc#Factors—All#the#living#parts##
•  The#different#parts#of#an#ecosystem#all#interact#with#
one#another#to#keep#organisms#alive.#
Today#we#will#focus#on#
the#BIOTIC#factors#in#an#
ecosystem:#
#
1.  Producers—plants#or#
other#organisms#that#
are#able#to#make#their#
own#food#form#the#
suns#energy#
(photosynthesis).#
2.#Consumers—Living#
organisms#that#consume#other#
living#things#for#food#and#
energy#
a.#Herbivore—an#organism#that#
only#eats#producers#(plants)##
#
b.#Omnivore—an#organism#
that#eats#producers#and#
consumers#(plants#and#
meat)#
c.#Carnivore—an#
organism#that#only#eats#
other#consumers#
(herbivores,#omnivores,#
or#other#carnivores)#
#
#
3.#Decomposers—#
•  Organisms#that#eat#dead#
organisms#and#wastes#for#
food.#
•  They#break#down#and#
recycle#nutrients#such#as#
carbon#and#nitrogen#back#
into#the#soil#so#producers#
(plants)#can#use#them#
again.#
#
#
What#is#a#Food#
Chain?#
•  A#diagram#that#
shows#the#
order#in#which#
living#things#eat#
food.#
#
What#is#a#Food#Web?#
•  Food#webs#show#the#rela=onship#of#many#different#
food#chains#in#an#ecosystem#
•  Each#arrow#connects#an#organism#to#its#consumer#
•  All#living#things#
are#dependent#on#
one#another#for#
survival#in#an#
ecosystem.#
#
•  If#one#organism#of#
the#food#web#
becomes#ex=nct,#
it#will#affect#the#
rest#of#the#
organisms#that#
are#part#of#the#
food#web.#