arid climate
arid region
carbon dioxide
cascade
challenge
change
climate
conservation
crisis
damage
dead tree
desert advancing
desert invasion
disaster
drought
droughts consequence
dry climate
dry conditions
dry earth
earth
eco
effect
empty
environmentally
forest
global
hot
hot weather
impact
lack rain
lake
land
landscape
mountains
nature
pacific northwest
polluted
pollution
problem
prolonged heat
risk
sadness
smoke
summer
temperature
unusual heat
warm
warning
water resources
weather