Careful Words
ammonia
(n.)
acetylene
argon
butane
chlorine
compost
coolant
dressing
dung
ethane
ether
ethylene
fertilizer
fluorine
formaldehyde
guano
helium
hydrogen
ice
krypton
manure
methane
muck
neon
nitrate
nitrogen
oxygen
ozone
phosphate
propane
radon
refrigerant
xenon
by
simon sarris
•
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