燃やす
alternative
background
bag
bio
biological
color
compressed
copy
eco
ecofriendly
ecological
ecology
energy
environment
fiery
fire
fireplace
flammable
friendly
fuel
green
heat
heating
many
material
natural
nature
nobody
object
pellet
pellets
power
recycling
renewable
resources
rustic
sack
saving
space
sustainability
table
text
top
view
warm
winter
wood
wooden