environmental
adventure
air
asia
bend
block
branch
canopy
carbon dioxide
careful
climate change
danger
dangerous
dead
destroy
destruction
environment
environmental disaster
environmentalist
explore
falling
falling trees
foliage
forest
fresh
freshness
global
global warming
green
hill
jungle
landscape
leaf
light
natural
natural diaster
natural disaster
nature
outdoor
oxygen
park
plant
prevent
protection
recreation
reserve
roots
sign
slippery
subtropical
taiwan
travel
traveler
tree
tropical rain forest
trunk
vacation
walk
warning
wilderness