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envirothon
river of life project
archaeological dig
reforested
aquiculture
hydrologists
arbor day
ecomuseum
bioremediation
wastewater treatment
microhabitats
riverworld
the roots of the mangrove trees
kiwi plantation
bioresources
geologie
limnology
mound of dirt
acequia
apple plantation
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macroinvertebrates
envirothon
reforesting
bioremediation
archaeological dig
neighborworks
aquiculture
geologie
microhabitats
ecomuseum
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reforesting
reforested
envirothon
microhabitats
archaeological dig
volunteer service
arbor day
transplanting
neighborworks
work in the garden
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adventure playground
camporee
reforesting
forestal
dendrochronology
macroinvertebrates
high ropes course
campamento
neighborworks
ecomuseum
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reforesting
reforested
envirothon
transplanting
arboriculture
arbor day
reforestation
horticulture
woodcutting
landcare
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hydrologists
macroinvertebrates
hydrogeology
streambank
aquiculture
macrophytes
riparian zone
water sampling point
the roots of the mangrove trees
tributaries
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archaeological dig
envirothon
clay soil
microhabitats
macroinvertebrates
volunteer service
composting
mound of dirt
excavation site
reforesting
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teaching children to recycle
composting
microhabitats
foragers
macroinvertebrates
permaculture
homesteaders
envirothon
children playing
cohousing
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shrimp survey
hydrologists
macroinvertebrates
seining
clamming
shrimp fishing
sapelo
macrophytes
aquiculture
ecologists
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macroinvertebrates
holstein cow
holstein cattle
agriculturists
dairymen
watusi cow
transplanting
dairyman
sharecropping
agriculturalists
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envirothon
macroinvertebrates
herpetologists
hydrologists
ecologists
geoscientists
bioprospecting
geocachers
hydrogeology
shrimp survey
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tona organic farm
rogation
appleworks
foragers
microhabitats
mennonite heritage village
horticulturalists
agritourism
organic farm
picking vegetables in early spring
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macroinvertebrates
archaeological dig
envirothon
hydrologists
trout breeding
dugout canoe
centralia
geocachers
crayfish party
adventure bridge
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envirothon
neighborworks
volunteer service
youthbuild
volunteerism
macroinvertebrates
chemical disaster exercise
camporee
water sampling point
volunteers
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hydrologists
macroinvertebrates
ecologists
herpetologists
hydrogeology
envirothon
docents
mycologists
excursionists
limnology
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youthbuild
work in the garden
footings
archaeological dig
constructionists
neighborworks
trenching
garden work
homesteaders
transplanting
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macroinvertebrates
envirothon
seining
hydrologists
aquiculture
trout breeding
environmental engineering
gilwell
limnology
hydrogeology
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fishing classes
people fishing
macroinvertebrates
hydrologists
alewives
shrimp fishing
carping
pilselv shrimp
fishery
fishermens
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macroinvertebrates
hydrologists
fording
envirothon
seining
aquiculture
mississinewa
isar
riparian zone
water sampling point
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work in the garden
macroinvertebrates
ocklawaha
transplanting
shrimp survey
microhabitats
neighborworks
hydrologists
water sampling point
loxahatchee
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hydrologists
seining
macrophytes
limnology
fishing classes
fieldwork
alewives
film crew
moviemaking
field work